/**
* 判斷網絡是否連通
* @param context
* @return
*/
public static boolean isNetworkConnected(Context context){
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(context.CONNECTIVITY_SERVICE);
NetworkInfo info = cm.getActiveNetworkInfo();
return info != null && info.isConnected();
}
彈出對話框並設置
//如果網絡連接
if(Util.isNetworkConnected(context)){
mMainFrameTask = new MainFrameTask();
mMainFrameTask.execute();
}else{
AlertDialog.Builder builder = new Builder(context);
builder.setTitle("設置網絡");
builder.setMessage("網絡錯誤，請設置網絡");
builder.setPositiveButton("設置網絡",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//獲取系統版本號
/* Build.VERSION_CODES
1 (0x00000001) Android 1.0 BASE
2 (0x00000002) Android 1.1 BASE_1_1
3 (0x00000003) Android 1.5 CUPCAKE
4 (0x00000004) Android 1.6 DONUT
5 (0x00000005) Android 2.0 ECLAIR
6 (0x00000006) Android 2.0.1 ECLAIR_0_1
7 (0x00000007) Android 2.1 ECLAIR_MR1
8 (0x00000008) Android 2.2 FROYO
9 (0x00000009) Android 2.3 GINGERBREAD
10 (0x0000000a) Android 2.3.3 GINGERBREAD_MR1
11 (0x0000000b) Android 3.0 HONEYCOMB
12 (0x0000000c) Android 3.1 HONEYCOMB_MR1
13 (0x0000000d) Android 3.2 HONEYCOMB_MR2 */
int currentapiVersion=android.os.Build.VERSION.SDK_INT;
System.out.println("currentapiVersion = " + currentapiVersion);
Intent intent;
if(currentapiVersion < 11){
intent = new Intent();
intent.setClassName("com.android.settings", "com.android.settings.WirelessSettings");
}else{
//3.0以後
//intent = new Intent( android.provider.Settings.ACTION_WIRELESS_SETTINGS);
intent = new Intent( android.provider.Settings.ACTION_SETTINGS);
}
context.startActivity(intent);
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.create().show();
}
}
註意：3.0以前和3.0以後的設置網絡方法不同。