Android 全局异常捕获

转载出处：http://blog.csdn.net/zly921112/article/details/51867079

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今天就来说说作为程序猿的我们每天都会遇到的东西bug,出bug不可怕可怕的是没有出bug时的堆栈信息,那么对于bug的信息收集就显得尤为重要了,一般用第三方bugly或者友盟等等都能轻易收集,但是由于公司不让使用第三方,而安卓正好有原生的异常收集类UncaughtExceptionHandler,那么今天博客就从这个类开始.

UncaughtExceptionHandler见名知意,即他是处理我们未捕获的异常,具体使用分两步

1. 列表实现我们自己的异常处理类

public class CrashHandler implements Thread.UncaughtExceptionHandler {    @Override    public void uncaughtException(Thread thread, Throwable ex) {    }}

需要我们实现Thread.UncaughtExceptionHandler接口当有未捕获的异常的时候会回调uncaughtException(Thread thread, Throwable ex)方法

2.设置该CrashHandler为系统默认的

Thread.setDefaultUncaughtExceptionHandler(crashHandler);

以上只是使用步骤的介绍,具体项目中的使用我直接贴代码
在application中初始化

package com.zly.www.basedemo.base;import android.app.Application;import android.content.Context;import com.zly.www.basedemo.exception.CrashHandler;/** * Created by zly on 2016/6/11. */public class AppApplication extends Application {    private static Context mContext;    @Override    public void onCreate() {        super.onCreate();        this.mContext = this;        CrashHandler.getInstance().init(this);//初始化全局异常管理    }    public static Context getContext(){        return mContext;    }}

CrashHandler 实现类如下

package com.zly.www.basedemo.exception;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.Looper;import android.util.Log;import android.widget.Toast;import com.zly.www.basedemo.utils.AppManager;import java.io.File;import java.io.FileOutputStream;import java.io.PrintWriter;import java.io.StringWriter;import java.io.Writer;import java.lang.reflect.Field;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.Map;/** * 全局异常捕获 * Created by zly on 2016/7/3. */public class CrashHandler implements Thread.UncaughtExceptionHandler {    /**     * 系统默认UncaughtExceptionHandler     */    private Thread.UncaughtExceptionHandler mDefaultHandler;    /**     * context     */    private Context mContext;    /**     * 存储异常和参数信息     */    private Map<String,String> paramsMap = new HashMap<>();    /**     * 格式化时间     */    private SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");    private String TAG = this.getClass().getSimpleName();    private static CrashHandler mInstance;    private CrashHandler() {    }    /**     * 获取CrashHandler实例     */    public static synchronized CrashHandler getInstance(){        if(null == mInstance){            mInstance = new CrashHandler();        }        return mInstance;    }    public void init(Context context){        mContext = context;        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();        //设置该CrashHandler为系统默认的        Thread.setDefaultUncaughtExceptionHandler(this);    }    /**     * uncaughtException 回调函数     */    @Override    public void uncaughtException(Thread thread, Throwable ex) {        if(!handleException(ex) && mDefaultHandler != null){//如果自己没处理交给系统处理            mDefaultHandler.uncaughtException(thread,ex);        }else{//自己处理            try {//延迟3秒杀进程                Thread.sleep(3000);            } catch (InterruptedException e) {                Log.e(TAG, "error : ", e);            }            //退出程序            AppManager.getAppManager().AppExit(mContext);        }    }    /**     * 收集错误信息.发送到服务器     * @return 处理了该异常返回true,否则false     */    private boolean handleException(Throwable ex) {        if (ex == null) {            return false;        }        //收集设备参数信息        collectDeviceInfo(mContext);        //添加自定义信息        addCustomInfo();        //使用Toast来显示异常信息        new Thread() {            @Override            public void run() {                Looper.prepare();                Toast.makeText(mContext, "程序开小差了呢..", Toast.LENGTH_SHORT).show();                Looper.loop();            }        }.start();        //保存日志文件        saveCrashInfo2File(ex);        return true;    }    /**     * 收集设备参数信息     * @param ctx     */    public void collectDeviceInfo(Context ctx) {        //获取versionName,versionCode        try {            PackageManager pm = ctx.getPackageManager();            PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);            if (pi != null) {                String versionName = pi.versionName == null ? "null" : pi.versionName;                String versionCode = pi.versionCode + "";                paramsMap.put("versionName", versionName);                paramsMap.put("versionCode", versionCode);            }        } catch (PackageManager.NameNotFoundException e) {            Log.e(TAG, "an error occured when collect package info", e);        }        //获取所有系统信息        Field[] fields = Build.class.getDeclaredFields();        for (Field field : fields) {            try {                field.setAccessible(true);                paramsMap.put(field.getName(), field.get(null).toString());            } catch (Exception e) {                Log.e(TAG, "an error occured when collect crash info", e);            }        }    }    /**     * 添加自定义参数     */    private void addCustomInfo() {    }    /**     * 保存错误信息到文件中     *     * @param ex     * @return  返回文件名称,便于将文件传送到服务器     */    private String saveCrashInfo2File(Throwable ex) {        StringBuffer sb = new StringBuffer();        for (Map.Entry<String, String> entry : paramsMap.entrySet()) {            String key = entry.getKey();            String value = entry.getValue();            sb.append(key + "=" + value + "\n");        }        Writer writer = new StringWriter();        PrintWriter printWriter = new PrintWriter(writer);        ex.printStackTrace(printWriter);        Throwable cause = ex.getCause();        while (cause != null) {            cause.printStackTrace(printWriter);            cause = cause.getCause();        }        printWriter.close();        String result = writer.toString();        sb.append(result);        try {            long timestamp = System.currentTimeMillis();            String time = format.format(new Date());            String fileName = "crash-" + time + "-" + timestamp + ".log";            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {                String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/crash/";                File dir = new File(path);                if (!dir.exists()) {                    dir.mkdirs();                }                FileOutputStream fos = new FileOutputStream(path + fileName);                fos.write(sb.toString().getBytes());                fos.close();            }            return fileName;        } catch (Exception e) {            Log.e(TAG, "an error occured while writing file...", e);        }        return null;    }}

activity管理类

package com.zly.www.basedemo.utils;import java.util.Stack;import android.app.Activity;  import android.app.ActivityManager;  import android.content.Context;/** * Activity管理类：用于管理Activity和退出程序 * Created by zly on 2016/6/11. */public class AppManager {      // Activity栈      private static Stack<Activity> activityStack;      // 单例模式      private static AppManager instance;      private AppManager() {      }      /**      * 单一实例      */      public static AppManager getAppManager() {          if (instance == null) {              instance = new AppManager();          }          return instance;      }      /**      * 添加Activity到堆栈      */      public void addActivity(Activity activity) {          if (activityStack == null) {              activityStack = new Stack<Activity>();          }          activityStack.add(activity);      }      /**      * 获取当前Activity（堆栈中最后一个压入的）      */      public Activity currentActivity() {          Activity activity = activityStack.lastElement();          return activity;      }      /**      * 结束当前Activity（堆栈中最后一个压入的）      */      public void finishActivity() {          Activity activity = activityStack.lastElement();          finishActivity(activity);      }      /**      * 结束指定的Activity      */      public void finishActivity(Activity activity) {          if (activity != null) {              activityStack.remove(activity);              activity.finish();              activity = null;          }      }      /**      * 结束指定类名的Activity      */      public void finishActivity(Class<?> cls) {          for (Activity activity : activityStack) {              if (activity.getClass().equals(cls)) {                  finishActivity(activity);                break;            }          }      }      /**      * 结束所有Activity      */      public void finishAllActivity() {          for (int i = 0; i < activityStack.size(); i++) {              if (null != activityStack.get(i)) {                  activityStack.get(i).finish();              }          }          activityStack.clear();      }      /**      * 退出应用程序      */      public void AppExit(Context context) {          try {              finishAllActivity();              //退出程序            android.os.Process.killProcess(android.os.Process.myPid());            System.exit(1);         } catch (Exception e) {          }      }  }