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【Java】 android处理全局异常
作者:阿紫 / 发布于2014/12/13/ 405

	package exception;
	
	import java.io.FileNotFoundException;
	import java.io.FileOutputStream;
	import java.io.IOException;
	import java.lang.Thread.UncaughtExceptionHandler;
	
	import android.content.Context;
	import android.util.Log;
	
	public class HandlerException implements UncaughtExceptionHandler {
	
	 private static final String TAG = "HandlerException";
	
	 private Context context;
	 private Thread.UncaughtExceptionHandler mDefaultHandler;
	
	 private static HandlerException mHandlerException = new HandlerException();
	
	 private HandlerException() {
	 }
	
	 public static HandlerException getInstance() {
	 return mHandlerException;
	 }
	
	 public void init(Context context) {
	 this.context = context;
	 mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
	 Thread.setDefaultUncaughtExceptionHandler(this);
	 }
	
	 @Override
	 public void uncaughtException(Thread thread, Throwable e) {
	 //如果没有处理异常，则设置默认的异常处理机制
	 if (!handlerException(e) && mDefaultHandler != null) {
	 mDefaultHandler.uncaughtException(thread, e);
	 } else {
	 // 如果自己处理了异常，退出app
	 try {
	 Thread.sleep(3000);
	 } catch (InterruptedException ex) {
	
	 }
	 android.os.Process.killProcess(android.os.Process.myPid());
	 System.exit(10);
	 }
	
	 }
	
	 public boolean handlerException(Throwable e) {
	 if (e == null)//无需处理
	 return false;
	 final String msg = e.getLocalizedMessage();
	 final StackTraceElement[] stack = e.getStackTrace();
	 final String message = e.getMessage();
	 Log.d(TAG, msg);
	 Log.d(TAG, message);
	 //将异常log保存在手机本地
	 try {
	 //没有测试成功
	 FileOutputStream fos = context.openFileOutput("/Android/log.txt",
	 context.MODE_PRIVATE);
	 fos.write(message.getBytes());
	 fos.flush();
	 fos.close();
	 /*File log = new File("log.txt");
	 if(!log.exists())
	 log.mkdirs();
	 FileOutputStream outputStream = new FileOutputStream(log);
	 outputStream.write(message.getBytes());
	 for (int i = 0; i < stack.length; i++) {
	 outputStream.write(stack.toString().getBytes());
	 }
	 outputStream.flush();
	 outputStream.close();*/
	 } catch (FileNotFoundException e1) {
	 e1.printStackTrace();
	 } catch (IOException e1) {
	 e1.printStackTrace();
	 }
	 //异常处理过了，返回true
	 //异常没有处理，返回false
	 return false;
	 }
	
	}

	

	import exception.HandlerException;
	import android.app.Application;
	
	public class MyApplication extends Application {
	 private static MyApplication instance;
	 private HandlerException handlerException;
	
	 public MyApplication() {
	 instance = this;
	 }
	
	 public static MyApplication getInstance() {
	 return instance;
	 }
	
	 @Override
	 public void onCreate() {
	 super.onCreate();
	 handlerException = HandlerException.getInstance();
	 handlerException.init(getApplicationContext());
	 }
	}
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