Question

在我的Android应用程序中，我需要管理自定义Activity类中所有未捕获的异常。现在我有一个问题，我无法从里面启动一个Activity。即使活动没有开始，也没有例外。

public class MyActivity extends Activity {
    Context context;
    Throwable throwable;
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        context=getApplicationContext();
        final AlertDialog.Builder builder= new AlertDialog.Builder(this);

        Thread.currentThread().setUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {

            @Override
            public void uncaughtException(Thread thread, Throwable ex) {
                throwable=ex;
                new Thread(){
                    @Override
                    public void run() {
                        Looper.prepare();

                        builder.setTitle("Warning...!");
                        builder.create();
                        builder.setNegativeButton("Close", new DialogInterface.OnClickListener() {

                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                finish();

                            }
                        });
                        builder.setPositiveButton("More Details", new DialogInterface.OnClickListener() {

                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                Intent intent= new Intent(MyActivity.this,Report.class);
                                intent.putExtra("error", throwable);
                                startActivity(intent);

                            }
                        });
                        builder.setMessage(throwable.getMessage());
                        builder.show();
                        Looper.loop();
                    }
                }.start();  
            }
        });
    }
}

Answer 1

您需要更改此行

startActivity(intent);

通过

context.startActivity(intent);

Answer 2

根据我的搜索结果，您似乎无法从Activity开始UncaughtExceptionHandler。您可以执行的最大操作是显示Toast消息。

Toast.makeText(app, "Some message", Toast.LENGTH_SHORT).show();

Answer 3

此代码与我合作正常。

注意：在我定义的未捕获异常代码后，2 seconds将加载新活动。

将下面的代码放在您的onCreate Activity of Activity

中

Thread.setDefaultUncaughtExceptionHandler(new UncaughtExceptionHandler(){

        @Override
        public void uncaughtException(Thread thread, Throwable ex) {
        AlarmManager mgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 2000, intent);
        System.exit(2); 
        startActivity(new Intent(CurrentActivity.this,TargetActivity.class));
    }
    });

如果您对此有任何疑问，请告诉我!!

如何从Uncaught Exception Handler中启动新活动

3 个答案: