關(guān)注finddreams，一起分享，一起進步！http://blog.csdn.net/finddreams/article/details/45569089
在開發(fā)中，我們常常用打印log的方式來調(diào)試我們的應(yīng)用。在Java中我們常常使用方法System.out.println()來在控制臺打印日志，以便我們的調(diào)試。Android中有一個專門的類Log來實現(xiàn)在Android系統(tǒng)下日志的打印，更加方便我們定位程序出現(xiàn)問題的地方。
但是Android官方提供的Log類在實際項目使用中，也不是非常方便。當程序出現(xiàn)錯誤時，我們最希望的就是這個Log類能幫我們定位到是哪個類的哪個方法，甚至于是那一行出現(xiàn)了錯誤。這樣就能給我們的調(diào)試帶來很大的便利。
同時我們也應(yīng)該想到為了應(yīng)用程序的安全起見，在app正式上線之前，我們應(yīng)該要把打印日志的功能關(guān)閉掉，以防別人通過Log來破解你的應(yīng)用。生產(chǎn)模式的下打印Log，正式模式就把打印日志的功能關(guān)閉掉，要做到Log的靈活關(guān)閉與打開，也需要在原生的Log類上進行一些封裝。
還有一種時候，當我們的程序出現(xiàn)問題崩潰了，我們希望能夠收集到出現(xiàn)異常的原因進行分析，所以可以把Log日志保存到一個文件中，放在SD卡程序創(chuàng)建的目錄下。也可以在用戶聯(lián)網(wǎng)的情況下，在程序的后臺把出異常的Log日志文件上傳到服務(wù)端，方便程序員進行分析，解決bug。
今天就給大家分享一個做項目中很實用的一個Log類LogUtils,這個類是從xUtils中提取出來，稍作修改的，有注釋。
示例：
我們在MainActivity中調(diào)用一些LogUtils中的方法，注意看行數(shù)。
接著看看控制臺打印的日志是不是像MainActivity調(diào)用的那樣，Log中有這個類的名字和oncreate方法名，已及當前行數(shù)；
看到上圖中的Log日志是不是很方便定位程序中的問題了，出現(xiàn)異常也能快速的定位到。然后把下面的Log類型在程序的任何地方設(shè)置為false則不會打印日志，使用起來相當?shù)姆奖恪?nbsp;
<code class="hljs java has-numbering" style="display: block; padding: 0px; background-color: transparent; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background-position: initial initial; background-repeat: initial initial;"> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 容許打印日志的類型，默認是true，設(shè)置為false則不打印</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowD = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowE = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowI = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowV = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowW = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowWtf = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>;</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li></ul>
代碼貼在下面：
<code class="hljs java has-numbering" style="display: block; padding: 0px; background-color: transparent; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background-position: initial initial; background-repeat: initial initial;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">package</span> com.finddreams.log;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.io.BufferedWriter;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.io.File;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.io.FileOutputStream;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.io.IOException;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.io.OutputStreamWriter;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.text.SimpleDateFormat;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.util.Date;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.util.Formatter;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.util.Locale;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.os.Environment;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.text.TextUtils;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.util.Log;<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/** * Log工具，類似android.util.Log。 tag自動產(chǎn)生，格式: * customTagPrefix:className.methodName(Line:lineNumber), * customTagPrefix為空時只輸出：className.methodName(Line:lineNumber)。 * http://blog.csdn.net/finddreams */</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">LogUtils</span> {</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> String customTagPrefix = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"finddreams"</span>; <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 自定義Tag的前綴，可以是作者名</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">final</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> isSaveLog = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>; <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 是否把保存日志到SD卡中</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">final</span> String ROOT = Environment.getExternalStorageDirectory() .getPath() + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/finddreams/"</span>; <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// SD卡中的根目錄</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">final</span> String PATH_LOG_INFO = ROOT + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"info/"</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-title" style="box-sizing: border-box;">LogUtils</span>() { } <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 容許打印日志的類型，默認是true，設(shè)置為false則不打印</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowD = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowE = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowI = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowV = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowW = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> allowWtf = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> String <span class="hljs-title" style="box-sizing: border-box;">generateTag</span>(StackTraceElement caller) { String tag = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"%s.%s(Line:%d)"</span>; <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 占位符</span> String callerClazzName = caller.getClassName(); <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 獲取到類名</span> callerClazzName = callerClazzName.substring(callerClazzName .lastIndexOf(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"."</span>) + <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>); tag = String.format(tag, callerClazzName, caller.getMethodName(), caller.getLineNumber()); <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 替換</span> tag = TextUtils.isEmpty(customTagPrefix) ? tag : customTagPrefix + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">":"</span> + tag; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> tag; } <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/** * 自定義的logger */</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> CustomLogger customLogger; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">interface</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">CustomLogger</span> {</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> d(String tag, String content); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> d(String tag, String content, Throwable tr); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> e(String tag, String content); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> e(String tag, String content, Throwable tr); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> i(String tag, String content); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> i(String tag, String content, Throwable tr); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> v(String tag, String content); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> v(String tag, String content, Throwable tr); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> w(String tag, String content); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> w(String tag, String content, Throwable tr); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> w(String tag, Throwable tr); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> wtf(String tag, String content); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> wtf(String tag, String content, Throwable tr); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> wtf(String tag, Throwable tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">d</span>(String content) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowD) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.d(tag, content); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.d(tag, content); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">d</span>(String content, Throwable tr) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowD) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.d(tag, content, tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.d(tag, content, tr); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">e</span>(String content) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowE) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.e(tag, content); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.e(tag, content); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (isSaveLog) { point(PATH_LOG_INFO, tag, content); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">e</span>(String content, Throwable tr) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowE) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.e(tag, content, tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.e(tag, content, tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (isSaveLog) { point(PATH_LOG_INFO, tag, tr.getMessage()); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">i</span>(String content) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowI) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.i(tag, content); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.i(tag, content); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">i</span>(String content, Throwable tr) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowI) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.i(tag, content, tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.i(tag, content, tr); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">v</span>(String content) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowV) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.v(tag, content); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.v(tag, content); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">v</span>(String content, Throwable tr) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowV) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.v(tag, content, tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.v(tag, content, tr); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">w</span>(String content) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowW) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.w(tag, content); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.w(tag, content); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">w</span>(String content, Throwable tr) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowW) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.w(tag, content, tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.w(tag, content, tr); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">w</span>(Throwable tr) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowW) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.w(tag, tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.w(tag, tr); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">wtf</span>(String content) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowWtf) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.wtf(tag, content); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.wtf(tag, content); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">wtf</span>(String content, Throwable tr) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowWtf) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.wtf(tag, content, tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.wtf(tag, content, tr); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">wtf</span>(Throwable tr) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!allowWtf) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>; StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (customLogger != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { customLogger.wtf(tag, tr); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { Log.wtf(tag, tr); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> StackTraceElement <span class="hljs-title" style="box-sizing: border-box;">getCallerStackTraceElement</span>() { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> Thread.currentThread().getStackTrace()[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>]; } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">point</span>(String path, String tag, String msg) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (isSDAva()) { Date date = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Date(); SimpleDateFormat dateFormat = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> SimpleDateFormat(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">""</span>, Locale.SIMPLIFIED_CHINESE); dateFormat.applyPattern(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"yyyy"</span>); path = path + dateFormat.format(date) + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/"</span>; dateFormat.applyPattern(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"MM"</span>); path += dateFormat.format(date) + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/"</span>; dateFormat.applyPattern(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"dd"</span>); path += dateFormat.format(date) + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">".log"</span>; dateFormat.applyPattern(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"[yyyy-MM-dd HH:mm:ss]"</span>); String time = dateFormat.format(date); File file = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> File(path); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!file.exists()) createDipPath(path); BufferedWriter out = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">try</span> { out = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> BufferedWriter(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> OutputStreamWriter( <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> FileOutputStream(file, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>))); out.write(time + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" "</span> + tag + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" "</span> + msg + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"\r\n"</span>); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (Exception e) { e.printStackTrace(); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">finally</span> { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">try</span> { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (out != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) { out.close(); } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (IOException e) { e.printStackTrace(); } } } } <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/** * 根據(jù)文件路徑 遞歸創(chuàng)建文件 * *<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> file */</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">createDipPath</span>(String file) { String parentFile = file.substring(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, file.lastIndexOf(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/"</span>)); File file1 = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> File(file); File parent = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> File(parentFile); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!file1.exists()) { parent.mkdirs(); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">try</span> { file1.createNewFile(); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (IOException e) { e.printStackTrace(); } } } <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/** * A little trick to reuse a formatter in the same thread */</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">ReusableFormatter</span> {</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> Formatter formatter; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> StringBuilder builder; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-title" style="box-sizing: border-box;">ReusableFormatter</span>() { builder = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> StringBuilder(); formatter = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Formatter(builder); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> String <span class="hljs-title" style="box-sizing: border-box;">format</span>(String msg, Object... args) { formatter.format(msg, args); String s = builder.toString(); builder.setLength(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> s; } } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">final</span> ThreadLocal<ReusableFormatter> thread_local_formatter = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> ThreadLocal<ReusableFormatter>() { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">protected</span> ReusableFormatter <span class="hljs-title" style="box-sizing: border-box;">initialValue</span>() { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> ReusableFormatter(); } }; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> String <span class="hljs-title" style="box-sizing: border-box;">format</span>(String msg, Object... args) { ReusableFormatter formatter = thread_local_formatter.get(); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> formatter.format(msg, args); } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">boolean</span> <span class="hljs-title" style="box-sizing: border-box;">isSDAva</span>() { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED) || Environment.getExternalStorageDirectory().exists()) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>; } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>; } }}</code>
