通过意图从另一个活动关闭活动

我想从第一个活动开始，并且想有目的地关闭第一个活动。我试过了，但接收器不起作用。我的应用程序中有不同的接收器，所以我希望仅从 FirstReceiver 接收此意图。我该怎么做？

public class First extends Activity 
{
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_first);
        Intent close = new Intent(getApplicationContext(), Close.class);
        startActivity(close);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) 
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.first, menu);
        return true;
    }

    class FirstReceiver extends BroadcastReceiver 
    {
        @Override
        public void onReceive(Context context, Intent intent) 
        {
            Log.e("FirstReceiver","FirstReceiver");
            First.this.finish();
        }
    }
}

这是第二堂课。

public class Close extends Activity 
{
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_close);
        Intent myIntent = new Intent();
        sendBroadcast(myIntent);
        Log.e("onCreate","onCreate");
        finish();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) 
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.close, menu);
        return true;
    }
}

这可能会帮助你...

public class First extends Activity {
    public static final String ACTION_CLOSE = "yourPackageName.ACTION_CLOSE";
    private FirstReceiver firstReceiver;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_first);
        IntentFilter filter = new IntentFilter(ACTION_CLOSE);
        firstReceiver = new FirstReceiver();
        registerReceiver(firstReceiver, filter);
        Intent close = new Intent(getApplicationContext(), Close.class);
        startActivity(close);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.first, menu);
        return true;
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unregisterReceiver(firstReceiver);
    }

    class FirstReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            Log.e("FirstReceiver", "FirstReceiver");
            if (intent.getAction().equals(ACTION_CLOSE)) {
                First.this.finish();
            }
        }
    }
}

public class Close extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_close);
        Intent myIntent = new Intent(First.ACTION_CLOSE);
        sendBroadcast(myIntent);
        Log.e("onCreate", "onCreate");
        finish();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.close, menu);
        return true;
    }
}