Android捕获全局异常

程序避免不了出现bug，导致程序崩溃，为了尽量不影响用户体验，可以全局捕获异常

效果图

• 异常捕获处理前

• 异常捕获处理后（将程序重新启动）

捕获异常的工具类

package com.example.kongqw.exceptiondemo;

import android.content.Context;

import android.support.v7.internal.app.ToolbarActionBar;

import android.util.Log;

import android.widget.Toast;

/**

 * Created by kongqw on 2015/11/3.

 */

public class KqwException implements Thread.UncaughtExceptionHandler {

    private static KqwException myCrashHandler;

    private Context mContext;

    private KqwException(Context context) {

        mContext = context;

    }

    public static synchronized KqwException getInstance(Context context) {

        if (null == myCrashHandler) {

            myCrashHandler = new KqwException(context);

        }

        return myCrashHandler;

    }

    public void uncaughtException(Thread thread, Throwable throwable) {

        long threadId = thread.getId();

        String message = throwable.getMessage();

        String localizedMessage = throwable.getLocalizedMessage();

        Log.i("KqwException", "------------------------------------------------------");

        Log.i("KqwException", "threadId = " + threadId);

        Log.i("KqwException", "message = " + message);

        Log.i("KqwException", "localizedMessage = " + localizedMessage);

        Log.i("KqwException", "------------------------------------------------------");

        throwable.printStackTrace();

        Log.i("KqwException", "------------------------------------------------------");

        // TODO 下面捕获到异常以后要做的事情，可以重启应用，获取手机信息上传到服务器等

        Log.i("KqwException", "------------------应用被重启----------------");

        // 重启应用

        mContext.startActivity(mContext.getPackageManager().getLaunchIntentForPackage(mContext.getPackageName()));

        //干掉当前的程序

        android.os.Process.killProcess(android.os.Process.myPid());

    }

}

使用

在Application下添加Handler

注册Application

在清单文件下添加name属性

<application

    ……

    android:name=".InitApplication"

    …… >

    <activity

        …… >

        <intent-filter>

            ……

        </intent-filter>

    </activity>

</application>

Application

package com.example.kongqw.exceptiondemo;

import android.app.Application;

/**

 * Created by kongqw on 2015/11/3.

 */

public class InitApplication extends Application {

    @Override

    public void onCreate() {

        super.onCreate();

        KqwException handler = KqwException.getInstance(this);

        Thread.setDefaultUncaughtExceptionHandler(handler);

    }

}

测试类

package com.example.kongqw.exceptiondemo;

import android.app.Activity;

import android.os.Bundle;

import android.support.design.widget.FloatingActionButton;

import android.support.design.widget.Snackbar;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.Toolbar;

import android.view.View;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.Toast;

public class MainActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

    }

    public void bug(View view) {

        Toast.makeText(this, "程序崩溃", Toast.LENGTH_SHORT).show();

        // 除数为0 导致程序崩溃

        int a = 1 / 0;

    }

}

XML布局

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    app:layout_behavior="@string/appbar_scrolling_view_behavior"

    tools:context=".MainActivity"

    tools:showIn="@layout/activity_main">

    <Button

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:onClick="bug"

        android:text="点击程序崩溃" />

</RelativeLayout>