全局捕获异常

在项目中,需要全部捕获崩溃异常,并打印日志.

在android项目中,捕获异常需要实现UncaughtExceptionHandler这个接口.实现Thread.UncaughtExceptionHandler接口并复写uncaughtException(Thread thread, Throwable ex)方法来实现对运行时线程进行异常处理.实现 UncaughtExceptionHandler接口，并在uncaughtException方法中处理异常，这里我们关闭App并启动我们需要的Activity.

/**
 * 异常崩溃捕捉
 * Created by lenew on 2017/5/8.
 */
public class CrashHandler implements UncaughtExceptionHandler {
    private UncaughtExceptionHandler mDefaultHandler;
    private static CrashHandler instance;
    private Context mContext;
    private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");

    private CrashHandler() {
    }

    public static CrashHandler getInstance() {
        if (instance == null) {
            instance = new CrashHandler();
        }

        return instance;
    }

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

    public void uncaughtException(Thread thread, Throwable ex) {
        if (!this.handleException(ex) && this.mDefaultHandler != null) {
            this.mDefaultHandler.uncaughtException(thread, ex);
        } else {
            try {
                Thread.sleep(3000L);
            } catch (InterruptedException var4) {
                ;
            }

            Process.killProcess(Process.myPid());
            System.exit(1);
        }

    }

    private boolean handleException(Throwable ex) {
        if (ex == null) {
            return false;
        } else {
            (new Thread() {
                public void run() {
                    Looper.prepare();
                    Toast.makeText(CrashHandler.this.mContext, "很抱歉,程序出现异常,即将退出.", Toast.LENGTH_SHORT).show();
                    Looper.loop();
                }
            }).start();

            try {
                this.saveCatchInfo2File(ex);
            } catch (Exception var3) {
                var3.printStackTrace();
            }

            return true;
        }
    }

    private String saveCatchInfo2File(Throwable ex) {
        StringBuffer sb = new StringBuffer();
        String time = this.formatter.format(new Date(System.currentTimeMillis()));
        sb.append("-------------------------------->" + time + "<--------------------------------------" + "\r\n");
        StringWriter writer = new StringWriter();
        PrintWriter printWriter = new PrintWriter(writer);
        ex.printStackTrace(printWriter);

        for (Throwable cause = ex.getCause(); cause != null; cause = cause.getCause()) {
            cause.printStackTrace(printWriter);
        }

        printWriter.close();
        String result = writer.toString();
        sb.append(result);
        String pkgName = this.mContext.getPackageName();
        Log.e("--------->" + pkgName + " error :", sb.toString());
        UObjectIO.writeString(sb.toString() + "\r\n", BasePath.getSDCachePath() + "log.txt");
        return null;
    }

    private void sendCrashLog2PM(String fileName) {
        if (!(new File(fileName)).exists()) {
            Toast.makeText(this.mContext, "日志文件不存在！", 0).show();
        } else {
            FileInputStream fis = null;
            BufferedReader reader = null;
            String s = null;

            try {
                fis = new FileInputStream(fileName);
                reader = new BufferedReader(new InputStreamReader(fis, "GBK"));

                while (true) {
                    s = reader.readLine();
                    if (s == null) {
                        break;
                    }

                    Log.i("info", s.toString());
                }
            } catch (FileNotFoundException var16) {
                var16.printStackTrace();
            } catch (IOException var17) {
                var17.printStackTrace();
            } finally {
                try {
                    reader.close();
                    fis.close();
                } catch (IOException var15) {
                    var15.printStackTrace();
                }

            }

        }
    }
}