我只有我的android应用,但无法获得互联网连接
这是我的AndroidManifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.onscreenapp.app" >
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<activity
android:name="com.example.onscreenapp.app.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>
</application>
如您所见,我对此具有权限。
我尝试使用2个功能检查互联网状态
一个是这个:
public boolean isInternetAvailable() {
try {
InetAddress ipAddr = InetAddress.getByName("google.com"); //You can replace it with your name
if (ipAddr.equals("")) {
return false;
} else {
return true;
}
} catch (Exception e) {
return false;
}
}
返回false,另一个是这个:
public final boolean isInternetOn() {
// get Connectivity Manager object to check connection
ConnectivityManager connec =
(ConnectivityManager)getSystemService(getBaseContext().CONNECTIVITY_SERVICE);
// Check for network connections
if ( connec.getNetworkInfo(0).getState() == android.net.NetworkInfo.State.CONNECTED ||
connec.getNetworkInfo(0).getState() == android.net.NetworkInfo.State.CONNECTING ||
connec.getNetworkInfo(1).getState() == android.net.NetworkInfo.State.CONNECTING ||
connec.getNetworkInfo(1).getState() == android.net.NetworkInfo.State.CONNECTED ) {
// if connected with internet
Toast.makeText(this, " Connected ", Toast.LENGTH_LONG).show();
return true;
} else if (
connec.getNetworkInfo(0).getState() == android.net.NetworkInfo.State.DISCONNECTED ||
connec.getNetworkInfo(1).getState() == android.net.NetworkInfo.State.DISCONNECTED ) {
Toast.makeText(this, " Not Connected ", Toast.LENGTH_LONG).show();
return false;
}
return false;
}
我正在android S4 mini上通过设备测试此应用程序,当我编译并启动它时,我得到“ appname has stop”,显示为运行时错误。
最佳答案
放在清单中的行下,不在应用程序中
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />