Android 打印java堆栈的几种方法

在Android调试过程中经常会出现程序出现的结果不是我们预期的结果，那就需要加Log打印调试，看调用过程是否正确，此时就需要打印程序的调用栈，特别是Android代码相当庞大，打印堆栈更有利于我们分析问题，下面就记录下平时用到不退出程序打印堆栈的方法。

验证的方法相关简单，在Activity的类中创建一个方法ThrowException，在onCreate中调用此方法，看打印出什么

 

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public void ThrowException() {
        // 调试打印堆栈而不退出
        Log.d(TAG, Log.getStackTraceString(new Throwable()));
 
        // 创建异常打印堆栈
        Exception e = new Exception("this is a log");
        e.printStackTrace();
 
        // 获取当前线程的堆栈
        for (StackTraceElement i : Thread.currentThread().getStackTrace()) {
            Log.i(TAG, i.toString());
        }
 
        RuntimeException re = new RuntimeException();
        re.fillInStackTrace();
        Log.i(TAG, "stackTrace", re);
 
        // 主动抛出异常调试
        try {
            Log.i(TAG,
                    "--------------------------------NullPointerException-----------1");
            throw new NullPointerException();
        } catch (NullPointerException e1) {
            // TODO: handle exception
            Log.i(TAG, "--------------------------------NullPointerException");
            Log.e(TAG, Log.getStackTraceString(e1));
            // e1.printStackTrace();
        }
        Log.i(TAG,
                "--------------------------------NullPointerException-----------end");
    }

1、Log.d(TAG, Log.getStackTraceString(new Throwable()));

 

 

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04-09 14:19:51.764 D/dzt_test(26317): java.lang.Throwable
04-09 14:19:51.764 D/dzt_test(26317):   at com.dzt.testapp.MainActivity.ThrowException(MainActivity.java:69)
04-09 14:19:51.764 D/dzt_test(26317):   at com.dzt.testapp.MainActivity.onCreate(MainActivity.java:63)
04-09 14:19:51.764 D/dzt_test(26317):   at android.app.Activity.performCreate(Activity.java:5343)
04-09 14:19:51.764 D/dzt_test(26317):   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
04-09 14:19:51.764 D/dzt_test(26317):   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2331)
04-09 14:19:51.764 D/dzt_test(26317):   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2429)
04-09 14:19:51.764 D/dzt_test(26317):   at android.app.ActivityThread.access$800(ActivityThread.java:151)
04-09 14:19:51.764 D/dzt_test(26317):   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1342)
04-09 14:19:51.764 D/dzt_test(26317):   at android.os.Handler.dispatchMessage(Handler.java:110)
04-09 14:19:51.764 D/dzt_test(26317):   at android.os.Looper.loop(Looper.java:193)
04-09 14:19:51.764 D/dzt_test(26317):   at android.app.ActivityThread.main(ActivityThread.java:5333)
04-09 14:19:51.764 D/dzt_test(26317):   at java.lang.reflect.Method.invokeNative(Native Method)
04-09 14:19:51.764 D/dzt_test(26317):   at java.lang.reflect.Method.invoke(Method.java:515)
04-09 14:19:51.764 D/dzt_test(26317):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:830)
04-09 14:19:51.764 D/dzt_test(26317):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:646)
04-09 14:19:51.764 D/dzt_test(26317):   at dalvik.system.NativeStart.main(Native Method)

2、

 

Exception e = new Exception("this is a log");
e.printStackTrace();

 

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04-09 14:19:51.764 W/System.err(26317): java.lang.Exception: this is a log
04-09 14:19:51.765 W/System.err(26317):     at com.dzt.testapp.MainActivity.ThrowException(MainActivity.java:72)
04-09 14:19:51.765 W/System.err(26317):     at com.dzt.testapp.MainActivity.onCreate(MainActivity.java:63)
04-09 14:19:51.765 W/System.err(26317):     at android.app.Activity.performCreate(Activity.java:5343)
04-09 14:19:51.765 W/System.err(26317):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
04-09 14:19:51.765 W/System.err(26317):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2331)
04-09 14:19:51.766 W/System.err(26317):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2429)
04-09 14:19:51.766 W/System.err(26317):     at android.app.ActivityThread.access$800(ActivityThread.java:151)
04-09 14:19:51.766 W/System.err(26317):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1342)
04-09 14:19:51.766 W/System.err(26317):     at android.os.Handler.dispatchMessage(Handler.java:110)
04-09 14:19:51.766 W/System.err(26317):     at android.os.Looper.loop(Looper.java:193)
04-09 14:19:51.766 W/System.err(26317):     at android.app.ActivityThread.main(ActivityThread.java:5333)
04-09 14:19:51.766 W/System.err(26317):     at java.lang.reflect.Method.invokeNative(Native Method)
04-09 14:19:51.766 W/System.err(26317):     at java.lang.reflect.Method.invoke(Method.java:515)
04-09 14:19:51.766 W/System.err(26317):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:830)
04-09 14:19:51.766 W/System.err(26317):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:646)
04-09 14:19:51.767 W/System.err(26317):     at dalvik.system.NativeStart.main(Native Method)

3、

 

 

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// 获取当前线程的堆栈
        for (StackTraceElement i : Thread.currentThread().getStackTrace()) {
            Log.i(TAG, i.toString());
        }
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04-09 14:19:51.767 I/dzt_test(26317): dalvik.system.VMStack.getThreadStackTrace(Native Method)
04-09 14:19:51.768 I/dzt_test(26317): java.lang.Thread.getStackTrace(Thread.java:579)
04-09 14:19:51.768 I/dzt_test(26317): com.dzt.testapp.MainActivity.ThrowException(MainActivity.java:76)
04-09 14:19:51.768 I/dzt_test(26317): com.dzt.testapp.MainActivity.onCreate(MainActivity.java:63)
04-09 14:19:51.768 I/dzt_test(26317): android.app.Activity.performCreate(Activity.java:5343)
04-09 14:19:51.769 I/dzt_test(26317): android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
04-09 14:19:51.769 I/dzt_test(26317): android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2331)
04-09 14:19:51.769 I/dzt_test(26317): android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2429)
04-09 14:19:51.769 I/dzt_test(26317): android.app.ActivityThread.access$800(ActivityThread.java:151)
04-09 14:19:51.770 I/dzt_test(26317): android.app.ActivityThread$H.handleMessage(ActivityThread.java:1342)
04-09 14:19:51.770 I/dzt_test(26317): android.os.Handler.dispatchMessage(Handler.java:110)
04-09 14:19:51.770 I/dzt_test(26317): android.os.Looper.loop(Looper.java:193)
04-09 14:19:51.770 I/dzt_test(26317): android.app.ActivityThread.main(ActivityThread.java:5333)
04-09 14:19:51.771 I/dzt_test(26317): java.lang.reflect.Method.invokeNative(Native Method)
04-09 14:19:51.771 I/dzt_test(26317): java.lang.reflect.Method.invoke(Method.java:515)
04-09 14:19:51.771 I/dzt_test(26317): com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:830)
04-09 14:19:51.771 I/dzt_test(26317): com.android.internal.os.ZygoteInit.main(ZygoteInit.java:646)
04-09 14:19:51.771 I/dzt_test(26317): dalvik.system.NativeStart.main(Native Method)

4、

 

 

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RuntimeException re = new RuntimeException();
        re.fillInStackTrace();
        Log.i(TAG, "stackTrace", re);

 

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04-09 14:19:51.773 I/dzt_test(26317): stackTrace
04-09 14:19:51.773 I/dzt_test(26317): java.lang.RuntimeException
04-09 14:19:51.773 I/dzt_test(26317):   at com.dzt.testapp.MainActivity.ThrowException(MainActivity.java:81)
04-09 14:19:51.773 I/dzt_test(26317):   at com.dzt.testapp.MainActivity.onCreate(MainActivity.java:63)
04-09 14:19:51.773 I/dzt_test(26317):   at android.app.Activity.performCreate(Activity.java:5343)
04-09 14:19:51.773 I/dzt_test(26317):   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
04-09 14:19:51.773 I/dzt_test(26317):   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2331)
04-09 14:19:51.773 I/dzt_test(26317):   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2429)
04-09 14:19:51.773 I/dzt_test(26317):   at android.app.ActivityThread.access$800(ActivityThread.java:151)
04-09 14:19:51.773 I/dzt_test(26317):   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1342)
04-09 14:19:51.773 I/dzt_test(26317):   at android.os.Handler.dispatchMessage(Handler.java:110)
04-09 14:19:51.773 I/dzt_test(26317):   at android.os.Looper.loop(Looper.java:193)
04-09 14:19:51.773 I/dzt_test(26317):   at android.app.ActivityThread.main(ActivityThread.java:5333)
04-09 14:19:51.773 I/dzt_test(26317):   at java.lang.reflect.Method.invokeNative(Native Method)
04-09 14:19:51.773 I/dzt_test(26317):   at java.lang.reflect.Method.invoke(Method.java:515)
04-09 14:19:51.773 I/dzt_test(26317):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:830)
04-09 14:19:51.773 I/dzt_test(26317):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:646)
04-09 14:19:51.773 I/dzt_test(26317):   at dalvik.system.NativeStart.main(Native Method)

5、

 

 

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// 主动抛出异常调试
        try {
            Log.i(TAG,
                    "--------------------------------NullPointerException-----------1");
            throw new NullPointerException();
        } catch (NullPointerException e1) {
            // TODO: handle exception
            Log.i(TAG, "--------------------------------NullPointerException");
            Log.e(TAG, Log.getStackTraceString(e1));
            // e1.printStackTrace();
        }
        Log.i(TAG,
                "--------------------------------NullPointerException-----------end");
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04-09 14:19:51.773 I/dzt_test(26317): --------------------------------NullPointerException-----------1
04-09 14:19:51.773 I/dzt_test(26317): --------------------------------NullPointerException
04-09 14:19:51.774 E/dzt_test(26317): java.lang.NullPointerException
04-09 14:19:51.774 E/dzt_test(26317):   at com.dzt.testapp.MainActivity.ThrowException(MainActivity.java:88)
04-09 14:19:51.774 E/dzt_test(26317):   at com.dzt.testapp.MainActivity.onCreate(MainActivity.java:63)
04-09 14:19:51.774 E/dzt_test(26317):   at android.app.Activity.performCreate(Activity.java:5343)
04-09 14:19:51.774 E/dzt_test(26317):   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
04-09 14:19:51.774 E/dzt_test(26317):   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2331)
04-09 14:19:51.774 E/dzt_test(26317):   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2429)
04-09 14:19:51.774 E/dzt_test(26317):   at android.app.ActivityThread.access$800(ActivityThread.java:151)
04-09 14:19:51.774 E/dzt_test(26317):   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1342)
04-09 14:19:51.774 E/dzt_test(26317):   at android.os.Handler.dispatchMessage(Handler.java:110)
04-09 14:19:51.774 E/dzt_test(26317):   at android.os.Looper.loop(Looper.java:193)
04-09 14:19:51.774 E/dzt_test(26317):   at android.app.ActivityThread.main(ActivityThread.java:5333)
04-09 14:19:51.774 E/dzt_test(26317):   at java.lang.reflect.Method.invokeNative(Native Method)
04-09 14:19:51.774 E/dzt_test(26317):   at java.lang.reflect.Method.invoke(Method.java:515)
04-09 14:19:51.774 E/dzt_test(26317):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:830)
04-09 14:19:51.774 E/dzt_test(26317):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:646)
04-09 14:19:51.774 E/dzt_test(26317):   at dalvik.system.NativeStart.main(Native Method)
04-09 14:19:51.775 I/dzt_test(26317): --------------------------------NullPointerException-----------end

虽然以上方法不尽一样，但打印出来的堆栈是一样的。

posted @ 2015-10-22 16:43  土肥圆  阅读(2017)  评论(0)    收藏  举报