Android 用广播关闭Activity

最新推荐文章于 2025-07-08 11:57:29 发布

Mr_ChenXu

最新推荐文章于 2025-07-08 11:57:29 发布

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分类专栏： Android知识整理文章标签： Android

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本文介绍了如何在Android应用中通过广播实现对特定Activity的关闭。首先，需要在AndroidManifest.xml中静态注册Action，然后创建一个BaseActivity作为基类，让目标Activity继承BaseActivity。同时，提供了一个sendFinishActivityBroadcast的方法，可以将其封装成Utils工具类，以简化Activity的代码并提高代码复用性。

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多个Activity界面跳转，关掉某个Activity

1、广播关闭Activity
通过在AndroidManifest.xml文件中，对Activity进行静态过滤action注册；

<activity android:name=".activity.AActivity">
            <intent-filter>
                <action android:name="action_a" />
            </intent-filter>
        </activity>
        <activity android:name=".activity.BActivity">
            <intent-filter>
                <action android:name="action_b" />
            </intent-filter>
        </activity>

再者，需要创建BaseActivity，需关闭的Activity要继承BaseActivity。

BaseActivity.java源码

public class BaseActivity extends Activity {

    //根据需求定义自己需要关闭页面的action
    public static final String RECEIVER_ACTION_FINISH_A = "action_a";
    public static final String RECEIVER_ACTION_FINISH_B = "action_b";

    private FinishActivityRecevier mRecevier;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mRecevier = new FinishActivityRecevier();
        registerFinishReciver();
    }

    private void registerFinishReciver() {
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(RECEIVER_ACTION_FINISH_A);
        intentFilter.addAction(RECEIVER_ACTION_FINISH_B);
        registerReceiver(mRecevier, intentFilter);
    }

    private class FinishActivityRecevier extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            //根据需求添加自己需要关闭页面的action
            if (RECEIVER_ACTION_FINISH_A.equals(intent.getAction()) ||
                    RECEIVER_ACTION_FINISH_B.equals(intent.getAction()) ) {
                BaseActivity.this.finish();
            }
        }
    }

    @Override
    protected void onDestroy() {
        if (mRecevier != null) {
            unregisterReceiver(mRecevier);
        }
        super.onDestroy();
    }
}

BActivity.java 源码使用

public class BActivity extends BaseActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_b);
    }
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.b_activity_btn:
                sendFinishActivityBroadcast(this);
                break;
        }
    }
    public static void sendFinishActivityBroadcast(Context context) {
        Intent intent = new Intent(BaseActivity.RECEIVER_ACTION_FINISH_A);
        context.sendBroadcast(intent);
        intent = new Intent(BaseActivity.RECEIVER_ACTION_FINISH_B);
        context.sendBroadcast(intent);
    }
}