全局异常捕获

新建一个类，直接复制一下代码：

/** * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告. *  * @author user *  */public class CrashHandler implements UncaughtExceptionHandler {public static final String TAG = "CrashHandler";//系统默认的UncaughtException处理类 private Thread.UncaughtExceptionHandler mDefaultHandler;//CrashHandler实例private static CrashHandler INSTANCE = new CrashHandler();//程序的Context对象private Context mContext;//用来存储设备信息和异常信息private Map<String, String> infos = new HashMap<String, String>();//用于格式化日期,作为日志文件名的一部分private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");/** 保证只有一个CrashHandler实例 */private CrashHandler() {}/** 获取CrashHandler实例 ,单例模式 */public static CrashHandler getInstance() {return INSTANCE;}/** * 初始化 *  * @param context */public void init(Context context) {mContext = context;//获取系统默认的UncaughtException处理器mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();//设置该CrashHandler为程序的默认处理器Thread.setDefaultUncaughtExceptionHandler(this);}/** * 当UncaughtException发生时会转入该函数来处理 */@Overridepublic void uncaughtException(Thread thread, Throwable ex) {if (!handleException(ex) && mDefaultHandler != null) {//如果用户没有处理则让系统默认的异常处理器来处理mDefaultHandler.uncaughtException(thread, ex);} else {//退出程序//第一种方法////Intent intent = new Intent(mContext, ReportActivity.class);//intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);//mContext.startActivity(intent);////Process.killProcess(Process.myPid());//第二种方法//Intent intent = new Intent(mContext, MainActivity.class);//intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);//mContext.startActivity(intent);//android.os.Process.killProcess(android.os.Process.myPid());}}/** * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成. *  * @param ex * @return true:如果处理了该异常信息;否则返回false. */private boolean handleException(Throwable ex) {if (ex == null) {return false;}使用Toast来显示异常信息new Thread() {@Overridepublic void run() {Looper.prepare();Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.", Toast.LENGTH_LONG).show();Looper.loop();}}.start();//收集设备参数信息 collectDeviceInfo(mContext);//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) {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 + "";infos.put("versionName", versionName);infos.put("versionCode", versionCode);}} catch (NameNotFoundException e) {Log.e(TAG, "an error occured when collect package info", e);}Field[] fields = Build.class.getDeclaredFields();for (Field field : fields) {try {field.setAccessible(true);infos.put(field.getName(), field.get(null).toString());Log.d(TAG, field.getName() + " : " + field.get(null));} catch (Exception e) {Log.e(TAG, "an error occured when collect crash info", e);}}}/** * 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 : infos.entrySet()) {String key = entry.getKey();String value = entry.getValue();sb.append(key + "=" + value + "\n");}sb.append(ex.getMessage());System.out.println("sb = " + sb.toString());////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 = formatter.format(new Date());//String fileName = "crash-" + time + "-" + timestamp + ".log";//if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {//String path = "/sdcard/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;}}

新建一个类，继承application，写入一以下代码：

CrashHandler.getInstance(). init(this);

最后把继承application的类在清单列表里注册即可。