Android学习6: BroastcastReceiver的注册方法

本文介绍了Android中BroadcastReceiver的使用方法,包括动态和静态注册过程,并提供了具体的代码示例。此外,还介绍了如何通过BroadcastReceiver获取系统参数。

BroastcastReceiver的具体使用方法, 还不是很清楚,  

今天又学习了一下大神张国威的博客. 有点收获. 

忙里抽闲也要找点时间来学习..


动态和静态调用的方法都不是很复杂.

这个例子里面还包函了获取系统参数的方法.


动态注册比静态注册要简单一些:

两步就可以了.

// 动态注册广播消息
registerReceiver(bcrIntenal1, new IntentFilter(INTENAL_ACTION_1));

    /*
     * 接收动态注册广播的BroadcastReceiver
     */
    private BroadcastReceiver bcrIntenal1 = new BroadcastReceiver() {

        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            Toast.makeText(context, "动态:" + action, 1000).show();
        }
    };


静态注册的方法:

首先要在XML中声明:

        // 静态注册方法
        <receiver android:name=".StaticReceiver">
            <intent-filter>
                <action
                    android:name="com.testBroadcastReceiver.Internal_2"/>
            </intent-filter>
        </receiver>

两个name, 第一个name 是类名. 第二个是action名称.


然后再声明类:

public class StaticReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        Toast.makeText(context, "静态:" + action, 1000).show();
    }
}



上图:


具体代码:

src/main/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.youtwo.testbroastcast" >

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        // 静态注册方法
        <receiver android:name=".StaticReceiver">
            <intent-filter>
                <action
                    android:name="com.testBroadcastReceiver.Internal_2"/>
            </intent-filter>
        </receiver>
    </application>

</manifest>

布局文件:

layout/activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true">

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="内部动态注册BroadCastReceiver"
            android:id="@+id/button1" />

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="内部静态注册BroadCastReceiver"
            android:id="@+id/button2" />

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="系统BROADCASTReceiver"
            android:id="@+id/button3"
            android:layout_gravity="center_horizontal" />
    </LinearLayout>
</RelativeLayout>

com/example/youtwo/testbroastcast/MainActivity.java

package com.example.youtwo.testbroastcast;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {

    Button btnInnerDynamic, btnInnerStatic, btnSystem;

    static final String INTENAL_ACTION_1 = "com.testBroadcastReceiver.Internal_1"; // 动态
    static final String INTENAL_ACTION_2 = "com.testBroadcastReceiver.Internal_2"; // 静态
    static final String INTENAL_ACTION_3 = "com.testBroadcastReceiver.Internal_3"; // 系统

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnInnerDynamic = (Button)this.findViewById(R.id.button1);
        btnInnerDynamic.setOnClickListener(new ClickEvent());

        btnInnerStatic = (Button)this.findViewById(R.id.button2);
        btnInnerStatic.setOnClickListener(new ClickEvent());

        btnSystem = (Button)this.findViewById(R.id.button3);
        btnSystem.setOnClickListener(new ClickEvent());

        // 动态注册广播消息
        registerReceiver(bcrIntenal1, new IntentFilter(INTENAL_ACTION_1));
    }


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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }


    class ClickEvent implements View.OnClickListener {

        @Override
        public void onClick(View v) {
            if(v == btnInnerDynamic) {
                Intent intent = new Intent(INTENAL_ACTION_1);
                sendBroadcast(intent);
            }
            else if(v == btnInnerStatic) {
                Intent intent = new Intent(INTENAL_ACTION_2);
                sendBroadcast(intent);
            }
            else if(v == btnSystem) {
                // 获取系统参数的方法
                IntentFilter filter = new IntentFilter();//
                filter.addAction(Intent.ACTION_BATTERY_CHANGED);//系统电量检测信息
                filter.addAction(INTENAL_ACTION_3);//第三组自定义消息
                registerReceiver(batInfoReceiver, filter);

                Intent intent = new Intent(INTENAL_ACTION_3);
                intent.putExtra("Name", "大神");
                intent.putExtra("Blog", "http://blog.youkuaiyun.com/hellogv"); // 有时间去膜拜一下.
                sendBroadcast(intent);//传递过去
            }
        }
    }

    /*
     * 接收动态注册广播的BroadcastReceiver
     */
    private BroadcastReceiver bcrIntenal1 = new BroadcastReceiver() {

        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            Toast.makeText(context, "动态:" + action, 1000).show();
        }
    };

    private BroadcastReceiver batInfoReceiver = new BroadcastReceiver() {

        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();

            //如果捕捉到的action是ACTION_BATTERY_CHANGED
            if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
                //当未知Intent包含的内容,则需要通过以下方法来列举
                Bundle b=intent.getExtras();
                Object[] lstName=b.keySet().toArray();

                for(int i=0;i<lstName.length;i++)
                {
                    String keyName=lstName[i].toString();
                    Log.e(keyName, String.valueOf(b.get(keyName)));
                }
            }

            //如果捕捉到的action是INTENAL_ACTION_3
            if (INTENAL_ACTION_3.equals(action)) {
                //当未知Intent包含的内容,则需要通过以下方法来列举
                Bundle b=intent.getExtras();
                Object[] lstName=b.keySet().toArray();

                for(int i=0;i<lstName.length;i++)
                {
                    String keyName=lstName[i].toString();
                    Log.e(keyName,b.getString(keyName));
                }
            }
        }
    };
}

com/example/youtwo/testbroastcast/StaticReceiver.java

package com.example.youtwo.testbroastcast;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

/**
 * Created by YouTwo on 2015/1/19.
 */
public class StaticReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        Toast.makeText(context, "静态:" + action, 1000).show();
    }
}




评论
成就一亿技术人!
拼手气红包6.0元
还能输入1000个字符
 
红包 添加红包
表情包 插入表情
 条评论被折叠 查看
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值