import android.app.Application;
import android.content.Intent;
import android.os.Looper;
import android.widget.Toast;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;

/**
 * Created by lsh on 2016-08-03.
 * version 1.0.2
 */
public class UnCaughtExceptionApplication extends Application {

    private void showToast() {
        new Thread() {
            @Override
            public void run() {
                // UI쓰레드에서 토스트 뿌림
                Looper.prepare();
                Toast.makeText(getApplicationContext(), "에러메시지", Toast.LENGTH_SHORT)
                        .show();
                Looper.loop();
            }
        }.start();

        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
        }

        android.os.Process.killProcess(android.os.Process.myPid());
        System.exit(0);
    }

    private void showDialog(String errorMessage) {
        Intent crashedIntent = new Intent(getApplicationContext(), ErrorMessageDialogActivity.class);
        crashedIntent.putExtra("Message", errorMessage);
        crashedIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(crashedIntent);

        if (Thread.currentThread() == Looper.getMainLooper().getThread()) {
            android.os.Process.killProcess(android.os.Process.myPid());
            System.exit(0);
        }
    }

//===============================================================================

    // uncaught exception handler variable
    private final UncaughtExceptionHandler defaultUEH;

    public UnCaughtExceptionApplication() {
        defaultUEH = Thread.getDefaultUncaughtExceptionHandler();

        // setup handler for uncaught exception
        Thread.setDefaultUncaughtExceptionHandler(_unCaughtExceptionHandler);
    }

    // handler listener
    private final UncaughtExceptionHandler _unCaughtExceptionHandler = new UncaughtExceptionHandler() {
        @Override
        public void uncaughtException(Thread thread, Throwable ex) {
            showDialog(getStackTrace(ex));
            // re-throw critical exception further to the os (important)
//            defaultUEH.uncaughtException(thread, ex);
        }
    };

    public static String getStackTrace(Throwable th) {
        final Writer result = new StringWriter();
        final PrintWriter printWriter = new PrintWriter(result);

        Throwable cause = th;
        while (cause != null) {
            cause.printStackTrace(printWriter);
            cause = cause.getCause();
        }
        final String stacktraceAsString = result.toString();
        printWriter.close();

        return stacktraceAsString;
    }
}