android 服务和清单文件

cuxqih21  于 2023-02-20  发布在  Android
关注(0)|答案(1)|浏览(162)

我写了这个代码在Android工作室,它不会显示我的吐司词消息:下面是清单文件:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/Theme.MyApplication"
        tools:targetApi="31">

        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        <receiver android:name=".BoradCastReciever"
            android:exported="false">
            <intent-filter>
                <action android:name="android.intent.action.AIRPLANE_MODE"/>
            </intent-filter>
        </receiver>
    </application>
</manifest>

下面是java代码类reciever:

package com.mohapp.myapplication;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class BoradCastReciever extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        boolean is_on = intent.getBooleanExtra("air", false);
        if (is_on == true) {
            Toast.makeText(context, "Air Plane mode is on", Toast.LENGTH_LONG).show();
        }else{
            Toast.makeText(context, "Air Plane mode is false", Toast.LENGTH_LONG).show();
        }
    }
}

我正在使用API 33与Gradle 7.5版和EmbeddJDK(jdk 11)

6ie5vjzr

6ie5vjzr1#

在API 30及以上版本中,它使用java代码的次数多于清单文件,xml文件使用onStart和onStop方法,在内部添加Intent,并使用此.register(接收方的obj claa)和unregister on stop方法

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