android之自定义广播

时间：2022-11-26 17:47:31

布局文件

点击按钮发送广播

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical" android:layout_width="match_parent"

    android:layout_height="match_parent">

    <Button

        android:id="@+id/sure"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:textSize="18sp"

        android:text="发送广播"/>

</LinearLayout>

activity

在Activity中监听按钮事件并创建意图对象,通过sendBroadcast将意图对象发送出去

package xidian.dy.com.chujia;

import android.content.Context;

import android.content.Intent;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    SharedPreferences sp;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        sp = getSharedPreferences("hate", Context.MODE_PRIVATE);

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

        if(button != null)

            button.setOnClickListener(new View.OnClickListener() {

                @Override

                public void onClick(View v) {

                    Intent intent = new Intent();

                    intent.setAction("com.dy.xd.test");

                    sendBroadcast(intent);

                }

            });

    }

}

广播接收者

package xidian.dy.com.chujia;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.widget.Toast;

/**

 * Created by dy on 2016/7/12.

 */

public class Custom extends BroadcastReceiver {

    @Override

    public void onReceive(Context context, Intent intent) {

        String action = intent.getAction();

        Toast.makeText(context, "我的广播" +action, Toast.LENGTH_SHORT).show();

    }

}

清单文件

在清单文件中需要我们在创建意图对象时设置的action

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="xidian.dy.com.chujia">

<application

    android:allowBackup="true"

    android:icon="@mipmap/ic_launcher"

    android:label="@string/app_name"

    android:supportsRtl="true"

    android:theme="@style/AppTheme">

    <activity

        android:name=".MainActivity"

        android:label="主界面">

        <intent-filter>

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

            <category android:name="android.intent.category.LAUNCHER" />

        </intent-filter>

    </activity>

    <receiver android:name=".Custom">

        <intent-filter>

            <action android:name="com.dy.xd.test" />

        </intent-filter>

    </receiver>

</application>

</manifest>

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