Facebook的应用程序类型没有互联网连接的消息 [英] Facebook app type no internet connection message

问题描述

我怎么能显示没有互联网连接的消息一样，在出现下面的选项卡视图Facebook的应用程序。

How can I show no internet connection message like in facebook app that appears below the tab view.

推荐答案

您可以在XML文件中设计这个，然后设置其可见不可见这样的：

You can design this in your XML file and then set its visibility to invisible like this:

<RelativeLayout
    android:id="@+id/relativelayout_connection"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentRight="true"
    android:alpha="0.8"
    android:background="@android:color/black" >

    <TextView
        android:id="@+id/textView_noInternetConnection"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_centerInParent="true"
        android:text="No Internet Connection."
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="@android:color/white" />

    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textView_noInternetConnection"
        android:layout_alignParentTop="true"
        android:layout_toLeftOf="@+id/textView_noInternetConnection"
        android:src="@drawable/warrning" />
</RelativeLayout>

在你的code使用的广播接收机是这样的：

In your code use the broadcast receiver like this:

private BroadcastReceiver mConnReceiver = new BroadcastReceiver() {

    @Override
    public void onReceive(Context context, Intent intent) {
        boolean noConnectivity = intent.getBooleanExtra(
                ConnectivityManager.EXTRA_NO_CONNECTIVITY, false);
        /*String reason = intent
                .getStringExtra(ConnectivityManager.EXTRA_REASON);*/
        boolean isFailover = intent.getBooleanExtra(
                ConnectivityManager.EXTRA_IS_FAILOVER, false);

        @SuppressWarnings("deprecation")
        NetworkInfo currentNetworkInfo = (NetworkInfo) intent
                .getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
        // NetworkInfo otherNetworkInfo = (NetworkInfo)
        // intent.getParcelableExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO);

        if (noConnectivity){    
            if(mRelativeLayout != null)
            mRelativeLayout.setVisibility(View.VISIBLE);

        }
        else if (currentNetworkInfo.isConnected()) {
            mRelativeLayout.setVisibility(View.GONE);


        } else if (isFailover) {
            Toast.makeText(getApplicationContext(), "Failover",
                    Toast.LENGTH_LONG).show();
        } else {
            mRelativeLayout.setVisibility(View.GONE);               
        }
    }       
};

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