安卓开发：广播的各种应用

package org.dreamtech.sdstate;

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

public class SdcardStateReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // 获取事件类型
        String action = intent.getAction();

        if ("android.intent.action.MEDIA_MOUNTED".equals(action)) {
            // sd卡挂载
        } else if ("android.intent.action.MEDIA_UNMOUNTED".equals(action)) {
            // sd卡卸载
        }
    }

}

       <receiver android:name="org.dreamtech.sdstate.SdcardStateReceiver">
            <intent-filter >
                <action android:name="android.intent.action.MEDIA_MOUNTED"/>
                <action android:name="android.intent.action."/>
                
                <!--约束类型叫file 因为sd里面存的数据类型是file  -->
                 <data android:scheme="file"/>
            </intent-filter>
        </receiver>

package org.dreamtech.smslistener;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.SmsMessage;

public class SmsListenerReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Object[] objects = (Object[]) intent.getExtras().get("pdus");

        for (Object object : objects) {
            SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) object);
            String messageBody = smsMessage.getMessageBody();
            String address = smsMessage.getOriginatingAddress();
            System.out.println("短信内容：" + messageBody + "####" + "来自" + address);
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.dreamtech.smslistener"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />
    <uses-permission android:name="android.permission.RECEIVE_SMS"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="org.dreamtech.smslistener.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>
        
        <receiver android:name="org.dreamtech.smslistener.SmsListenerReceiver">
            <intent-filter >
                <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
            </intent-filter>
        </receiver>
    </application>

</manifest>

package org.dreamtech.appstate;

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

public class AppStateReceiver extends BroadcastReceiver {

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

        if ("android.intent.action.PACKAGE_INSTALL".equals(action)) {
            // 应用安装（虽然存在，但是实际并不调用）
        } else if ("android.intent.action.PACKAGE_ADDED".equals(action)) {
            // 应用安装
        } else if ("android.intent.action.PACKAGE_REMOVED".equals(action)) {
            // 应用卸载
        }
    }

}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.dreamtech.appstate"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="org.dreamtech.appstate.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>

        <receiver android:name="org.dreamtech.appstate.AppStateReceiver" >
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_INSTALL" />
                <action android:name="android.intent.action.PACKAGE_ADDED" />
                <action android:name="android.intent.action.PACKAGE_REMOVED" />
                <!-- 注意配置约束 -->
                <data android:scheme="package" />
            </intent-filter>
        </receiver>
    </application>

</manifest>