静态广播

1.定义

public class TestBroadCast extends BroadcastReceiver {

    @Override

    public void onReceive(Context context, Intent intent) {

        Toast.makeText(context, "静态注册", Toast.LENGTH_SHORT).show();

    }

}

2.注册

 <receiver

            android:name=".TestBroadCast"

            android:enabled="true"

            android:exported="true">

            <intent-filter>

                <action android:name="android.intent.action.BOOT_COMPLETED"/>

            </intent-filter>

        </receiver>

3.发送

 Intent intent = new Intent();

 intent.setAction("HELLO");

 intent.addFlags(0x01000000);    // Android 8.0之后的变化，需要添加之后，静态才能发送广播

 sendBroadcast(intent);

动态广播（有序广播）

1.定义

//        定义接收器

         broadcastReceiver = new BroadcastReceiver() {

            @Override

            public void onReceive(Context context, Intent intent) {

                Toast.makeText(context, "动态注册", Toast.LENGTH_SHORT).show();

            }

        };

2.注册

//        注册

        IntentFilter intentFilter = new IntentFilter();

        intentFilter.addAction("HELLO");

        registerReceiver(broadcastReceiver, intentFilter);

3.发送

        Intent intent = new Intent();

        intent.setAction("HELLO");

        sendOrderedBroadcast(intent,null);       // 有序广播的发送

本地广播

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        final LocalBroadcastManager localBroadcastManager = LocalBroadcastManager.getInstance(this);   // 开启本地广播管理

        Button button = findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                Intent intent = new Intent("TEST");

                localBroadcastManager.sendBroadcast(intent);

            }

        });

        IntentFilter intentFilter = new IntentFilter();

        intentFilter.addAction("TEST");

        BroadcastReceiver receiver = new BroadcastReceiver() {

            @Override

            public void onReceive(Context context, Intent intent) {

                Toast.makeText(context, "received", Toast.LENGTH_SHORT).show();

            }

        };

        localBroadcastManager.registerReceiver(receiver,intentFilter);

巴特西

Unit5：广播

静态广播

动态广播（有序广播）

本地广播

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