跨程式之間的廣播傳值
阿新 • • 發佈:2019-01-08
第一個應用程式:Broadcast
【MainActivity.java】
package com.example.broadcast; import android.os.Bundle; import android.app.Activity; import android.content.Intent; public class MainActivity extends Activity { public final static String SEND_OK_MESSAGE = "send.ok.message"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Intent intent = new Intent(SEND_OK_MESSAGE); intent.putExtra("name", "AnJon"); sendBroadcast(intent); } }
第二個應用程式:Broadcast1
【MainActivity.java】
package com.example.broadcast1; import android.os.Bundle; import android.app.Activity; import android.content.Intent; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Intent i = new Intent(this, MyService.class); startService(i); } }
【MyService.java】
package com.example.broadcast1; import android.app.Service; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.IBinder; import android.widget.Toast; public class MyService extends Service { public final static String SEND_OK_MESSAGE = "send.ok.message"; private BroadcastReceiver myBroadCast = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(SEND_OK_MESSAGE)) { Toast.makeText( context, "接收到了一條廣播為" + SEND_OK_MESSAGE + intent.getStringExtra("name"), Toast.LENGTH_LONG).show(); } } }; @Override public void onCreate() { super.onCreate(); } @Override public void onStart(Intent intent, int startId) { IntentFilter myFilter = new IntentFilter(); myFilter.addAction(SEND_OK_MESSAGE); this.registerReceiver(myBroadCast, myFilter); super.onStart(intent, startId); } @Override public IBinder onBind(Intent arg0) { return null; } }
【AndroidManifest.xml】清單檔案
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.broadcast1"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.broadcast1.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>
<service android:name=".MyService">
<intent-filter>
<action android:name="com.example.broadcast1.MyService"></action>
</intent-filter>
<intent-filter>
<action android:name="send.ok.message" />
</intent-filter>
</service>
</application>
</manifest>
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