监听软件异常崩溃并且保持日志--CrashHandler编写自己的异常捕获类

　　平时写代码，我们可能会抛出各种异常，这些异常有些是我们测试过程中发现进行解决的，但是也有一些异常是我们未知的，不论是代码的逻辑问题还是Android本身底层的一些bug，我们都需要及时了解并进行解决。当用户在使用app出现崩溃现象时我们需要知道是什么原因，并将原因记录下来上到服务器，这样以后我们就可以知道具体是什么原因了

CrashHandler类--用于记录crash原因保存到sd卡中。

 public class CrashHandler implements Thread.UncaughtExceptionHandler {
     private static final String TAG = "CrashHandler";
     private static final boolean DEBUG = true;
     //文件路径
     private static final String PATH = Environment.getExternalStorageDirectory().getPath() +File.separator+ "crash";
     private static final String FILE_NAME = "crash";
     private static final String FILE_NAME_SUFEIX = ".trace";
     private static Thread.UncaughtExceptionHandler mDefaultCrashHandler;
     private static CrashHandler mCrashHandler = new CrashHandler();
     private Context mContext;

     private CrashHandler() {
     }

     public static CrashHandler getInstance() {
         return mCrashHandler;
     }

     public void init(Context context) {
         mDefaultCrashHandler = Thread.getDefaultUncaughtExceptionHandler();
         Thread.setDefaultUncaughtExceptionHandler(this);
         mContext = context.getApplicationContext();
     }

     @Override
     public void uncaughtException(Thread thread, Throwable ex) {
         try {
             //将文件写入sd卡
             writeToSDcard(ex);
             //写入后在这里可以进行上传操作
         } catch (IOException e) {
             e.printStackTrace();
         } catch (PackageManager.NameNotFoundException e) {
             e.printStackTrace();
         }
         ex.printStackTrace();
         //如果系统提供了默认异常处理就交给系统进行处理，否则自己进行处理。
         if (mDefaultCrashHandler != null) {
             mDefaultCrashHandler.uncaughtException(thread, ex);
         } else {
             Process.killProcess(Process.myPid());
         }
     }

     //将异常写入文件
     private void writeToSDcard(Throwable ex) throws IOException, PackageManager.NameNotFoundException {
         //如果没有SD卡，直接返回
         if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
             return;
         }
         File filedir = new File(PATH);
         if (!filedir.exists()) {
             filedir.mkdirs();
         }
         long currenttime = System.currentTimeMillis();
         String time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date(currenttime));

         File exfile = new File(PATH +File.separator+FILE_NAME+time + FILE_NAME_SUFEIX);
         PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(exfile)));
         Log.e("错误日志文件路径",""+exfile.getAbsolutePath());
         pw.println(time);
         PackageManager pm = mContext.getPackageManager();
         PackageInfo pi = pm.getPackageInfo(mContext.getPackageName(), PackageManager.GET_ACTIVITIES);
         //当前版本号
         pw.println("App Version:" + pi.versionName + "_" + pi.versionCode);
         //当前系统
         pw.println("OS version:" + Build.VERSION.RELEASE + "_" + Build.VERSION.SDK_INT);
         //制造商
         pw.println("Vendor:" + Build.MANUFACTURER);
         //手机型号
         pw.println("Model:" + Build.MODEL);
         //CPU架构
         pw.println("CPU ABI:" + Build.CPU_ABI);

         ex.printStackTrace(pw);
         pw.close();

     }

 }

调用

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

测试

mButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                throw  new RuntimeException("抛出一个异常");
            }
});

最后记得添加文件权限，并调用BaseApplication

发送给后台有点类似与用户注册

友情链接：

http://blog.csdn.net/a2241076850/article/details/54944667

http://blog.csdn.net/i_lovefish/article/details/17719081