public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //动态注册广播接受者,优先级高于静态注册        IntentFilter intentFilter = new IntentFilter("BC_One");        BC2 bc2 = new BC2();        registerReceiver(bc2,intentFilter);    }    public void doClick(View v){        switch (v.getId()){            case R.id.button:                //普通广播                Intent intent = new Intent();                intent.putExtra("msg","这是一条普通广播");                intent.setAction("BC_One");                sendBroadcast(intent);                break;            case R.id.button2:                //有序广播                Intent intent2 = new Intent();                intent2.putExtra("msg","这是一条有序广播");                intent2.setAction("BC_Two");                sendOrderedBroadcast(intent2,null);                break;            case R.id.button3:                //异步广播 可以先发送再注册                Intent intent3 = new Intent();                intent3.putExtra("msg","这是一条异步广播");                intent3.setAction("BC_Three");                sendStickyBroadcast(intent3);                IntentFilter intentFilter = new IntentFilter("BC_Three");                BC3 bc = new BC3();                registerReceiver(bc,intentFilter);                break;            default:                break;        }    }}//配置文件        /** priority -- 优先级          * 静态注册          */        
                
                     
                  
             
            
                
                    
                
            
            
                
                     
                  
             
            
                
                     
                  
             
    //普通广播接收public class BC1 extends BroadcastReceiver{    @Override    public void onReceive(Context context, Intent intent) {        String s = intent.getStringExtra("msg");        System.out.println("receive1收到的信息:"+s);    }}public class BC2 extends BroadcastReceiver{    @Override    public void onReceive(Context context, Intent intent) {        String s = intent.getStringExtra("msg");        System.out.println("receive2收到的信息:"+s);    }}//有序广播接收public class BC3 extends BroadcastReceiver{    @Override    public void onReceive(Context context, Intent intent) {        String s = intent.getStringExtra("msg");        System.out.println("receive3收到的信息:"+s);        Bundle bundle = new Bundle();        bundle.putString("test","拦截广播添加数据");        setResultExtras(bundle);    }}public class BC4 extends BroadcastReceiver{    @Override    public void onReceive(Context context, Intent intent) {        String s = intent.getStringExtra("msg");        System.out.println("receive4收到的信息:"+s);        Bundle bundle = getResultExtras(true);        String s2 = bundle.getString("test");        System.out.println("得到的处理结果是: "+s2);    }}//异步广播接收public class BC5 extends BroadcastReceiver{    @Override    public void onReceive(Context context, Intent intent) {        System.out.println("收到异地广播");    }}