我有一個活動,我正在初始化廣播接收器。我希望這個廣播接收器能夠在我的活動中調用一個功能,一旦它收到手機網絡狀態發生變化的消息。活動開始廣播接收器檢查網絡狀態
不幸的是,似乎廣播接收機從來沒有收到這條消息,因爲onReceive函數從未被調用過。
這裏接收器:
private BroadcastReceiver NetworkReceiver= new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final ConnectivityManager connMgr = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
final android.net.NetworkInfo wifi = connMgr
.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
final android.net.NetworkInfo mobile = connMgr
.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if (!wifi.isAvailable() || !mobile.isAvailable()) {
Log.d("debug"," in the if");
Handler handler = new Handler();
handler.postDelayed(sendUpdatesToUI, 10);
Log.d("Network Available ", "Flag No 1");
}
}
};
private Runnable sendUpdatesToUI = new Runnable() {
public void run() {
update();
}
};
private void update() {
Log.d("debug", "got update");
}
我叫這條線在OnCreate函數註冊它:
registerReceiver(NetworkReceiver, new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE"));
,這裏是我的清單:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.rtuya.secmere">
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".LoginActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main"
android:theme="@style/AppTheme.NoActionBar" />
</application>
</manifest>
編輯
我已經添加了這個我的清單,但還是沒有結果:
<receiver
android:name="NetworkReceiver"
android:label="NetworkReceiver" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
我正在測試它與API 25 –