SD卡监听---BroadcastReceiver_broadcast 监听sd卡插入广播-优快云博客

本文介绍如何在Android应用中监听并响应SD卡的状态变化，包括SD卡就绪、拔出和卸载，通过注册广播接收器实现SD卡状态的实时监控。

package com.demo.sdcard;

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

public class SDReceiver extends BroadcastReceiver {

	@Override
	public void onReceive(Context context, Intent intent) {
		//判断收到的广播类型
		//获取广播中的action
		String action = intent.getAction();
		
		if(Intent.ACTION_MEDIA_MOUNTED.equals(action)){
			Toast.makeText(context, "sd卡就绪", 0).show();
		}else if(Intent.ACTION_MEDIA_REMOVED.equals(action)){
			Toast.makeText(context, "sd卡拔出", 0).show();
		}else if(Intent.ACTION_MEDIA_UNMOUNTED.equals(action)){
			Toast.makeText(context, "sd卡卸载", 0).show();
		}
	}

}

xml注册广播和添加sd卡状态

<pre name="code" class="java"><receiver 
            android:name="com.demo.sdcard.SDReceiver">
            <intent-filter >
                <!-- 添加SD卡的状态    就绪，拔出，卸载 -->
                <action android:name="android.intent.action.MEDIA_MOUNTED"/>
                <action android:name="android.intent.action.MEDIA_REMOVED"/>
                <action android:name="android.intent.action.MEDIA_UNMOUNTED"/>
            </intent-filter>
        </receiver>