當連接恢復時，我想運行此任務，我想調用NewortchangeReceiver（）構造函數。我在Mainactivity IntentFilter中寫了“ android.net.conn.CONNECTIVITY_CHANGE”，因為“ android.net.conn.CONNECTIVITY_CHANGE”在android N（7）的androidmanifest.xml中不起作用。我想在互聯網連接更改時自動重新加載webview。protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); wvDailyDarshan = (WebView) findViewById(R.id.wvDailyDarshan); progressBar = (ProgressBar) findViewById(R.id.progressBar); IntentFilter intentFilter = new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE"); context.registerReceiver(new NetworkChangeReceiver(), intentFilter); Boolean connection = isNetworkConnected(); if (connection == false) { Snackbar.make(this.getWindow().getDecorView().findViewById(android.R.id.content), "Please check your Internet Connection", Snackbar.LENGTH_SHORT).show(); } else if (connection == true) { wvDailyDarshan.getSettings().setJavaScriptEnabled(true); //wvDailyDarshan.loadUrl("http://www.swaminarayanbhagwan.com/daily-darshan/"); wvDailyDarshan.setWebViewClient(new myWebClient()); wvDailyDarshan.getSettings().setJavaScriptEnabled(true); wvDailyDarshan.getSettings().setBuiltInZoomControls(true); wvDailyDarshan.getSettings().setDisplayZoomControls(false); wvDailyDarshan.loadUrl("https://www.google.co.in/"); }}
2 回答
BIG陽
TA貢獻1859條經驗 獲得超6個贊
我從您的問題中得到的是，當連接性發生變化時，您希望獲得回調。所以我會回答。
NetworkChangeReceiver：
public class NetworkChangeReceiver extends BroadcastReceiver {
ConnectionChangeCallback connectionChangeCallback;
@Override
public void onReceive(Context context, Intent intent) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
boolean isConnected = activeNetwork != null
&& activeNetwork.isConnectedOrConnecting();
if (connectionChangeCallback != null) {
connectionChangeCallback.onConnectionChange(isConnected);
}
}
public void setConnectionChangeCallback(ConnectionChangeCallback
connectionChangeCallback) {
this.connectionChangeCallback = connectionChangeCallback;
}
public interface ConnectionChangeCallback {
void onConnectionChange(boolean isConnected);
}
}
現在，您的Activity應該在BraodCastReceiver上調用setConnectionChangeCallback，即NetworkChangeReceiver的對象，并提供ConnectionChangeCallback的實現。
可能看起來像這樣?；顒樱?/p>
public class YourActivity implments NetworkChangeReceiver.ConnectionChangeCallback
{
@Override
protected void onCreate(Bundle savedInstanceState) {
.....
IntentFilter intentFilter = new
IntentFilter("android.net.conn.CONNECTIVITY_CHANGE");
NetworkChangeReceiver networkChangeReceiver = new NetworkChangeReceiver();
registerReceiver(networkChangeReceiver, intentFilter);
networkChangeReceiver.setConnectionChangeCallback(this);
}
@Override
public void onConnectionChange(boolean isConnected) {
if(isConnected){
// will be called when internet is back
}
else{
// will be called when internet is gone.
}
}
}
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