Android程序Crash统计

大家都知道，在开发程序时，很难做到不会crash，程序在crash后我们就要分析其原因，那么首先就得统计crash信息。 本篇文章将介绍程序在crash后，如何获取crash的信息。

创建CrashHandler

package com.crash.xxx.crashhandlertest;import android.content.Context;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.os.Build;import android.os.Environment;import android.os.Process;import android.util.Log;import java.io.BufferedWriter;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.io.PrintWriter;import java.text.SimpleDateFormat;import java.util.Date;/** * Created by xxx on 2016/8/19. */public class CrashHandler implements Thread.UncaughtExceptionHandler {    private static final boolean DEBUG=true;    private static final String TAG="CrashHanler";    private static final String PATH=Environment.getExternalStorageDirectory().getPath()+"/crashHandlerTest/crash_log/";    private static final String FILE_NAME="crash_";    private static final String FILE_NAME_SUFFIX=".trace";    private static CrashHandler mInstance=new CrashHandler();    private Thread.UncaughtExceptionHandler mUncaughtExceptionHandler;    private Context mContext;    private CrashHandler(){    }    public static CrashHandler getInstance(){        return mInstance;    }    public void init(Context context){        mUncaughtExceptionHandler=Thread.getDefaultUncaughtExceptionHandler();        Thread.setDefaultUncaughtExceptionHandler(this);        mContext=context.getApplicationContext();    }    /**     * 当程序中有未捕捉的异常，系统自动调用此方法；     * thread为出现异常的线程，ex为未捕捉的异常     * @param thread     * @param ex     */    @Override    public void uncaughtException(Thread thread, Throwable ex) {        try {            //将导出的异常写入SD卡中            dumpExceptionToSDCard(ex);        } catch (IOException e) {            e.printStackTrace();        }        ex.printStackTrace();        //如果系统提供了异常处理，则交给系统去结束程序，否则由自己的程序结束自己        if (mUncaughtExceptionHandler!=null){            mUncaughtExceptionHandler.uncaughtException(thread,ex);        }else{            Process.killProcess(Process.myPid());        }    }    public void dumpExceptionToSDCard(Throwable ex) throws IOException{        //如果sd卡存在，则将异常写入sd卡中        if (!Environment.getExternalStorageState().endsWith(Environment.MEDIA_MOUNTED)){            if (DEBUG){                Log.w(TAG,"sdcard unmounted,skip dump exception");                return;            }        }        File dir=new File(PATH);        if (!dir.exists()){            dir.mkdirs();        }        long current=System.currentTimeMillis();        String time=new SimpleDateFormat("yyyy-MM-dd").format(new Date(current));        File file=new File(PATH+FILE_NAME+time+FILE_NAME_SUFFIX);        try {            PrintWriter pw=new PrintWriter(new BufferedWriter(new FileWriter(file)));            pw.println(time);            //写入手机信息            dumpPhoneInfo(pw);            pw.println();            //写入崩溃信息            ex.printStackTrace(pw);            pw.close();        } catch (Exception e) {            e.printStackTrace();            if (DEBUG){                Log.e(TAG,"写入失败"+e);            }        }    }    public void dumpPhoneInfo(PrintWriter pw) throws PackageManager.NameNotFoundException{        PackageManager pm=mContext.getPackageManager();        PackageInfo pi=pm.getPackageInfo(mContext.getPackageName(),PackageManager.GET_ACTIVITIES);        pw.println("APP Version:");        pw.print(pi.versionName);        pw.print("_");        pw.println(pi.versionCode);        //android version code        pw.print("OS version: ");        pw.print(Build.VERSION.RELEASE);        pw.print("_");        pw.println(Build.VERSION.SDK_INT);        //phone makes vendor        pw.print("Vendor: ");        pw.println(Build.MANUFACTURER);        //phone model        pw.print("Model: ");        pw.println(Build.MODEL);        //CPU ABI        pw.print("CPU ABI: ");        pw.println(Build.CPU_ABI);    }    //将crash日志上传到服务器    public void upLoadExceptionToServer(){    }}

在AppLication初始化时为线程配置CrashHandler

@Override    public void onCreate() {        super.onCreate();        CrashHandler crashHandler=CrashHandler.getInstance();        crashHandler.init(this);    }

在清单文件中注册创建的AppLication，并添加所需的权限

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />    <uses-permission android:name="android.permission.Write_EXTERNAL_STORAGE"/>

测试

在MainActivity中创建一个Button，为其添加点击事件,在监听回调中抛一个自定义异常。

 @Override    public void onClick(View v) {        if (v.getId()==R.id.btn_click){            throw new RuntimeException("自定义运行时异常");        }    }