Context trick

Posted on 
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public class MyApplication extends Application {
	private static Context context;
	@Override
	public void onCreate() {
		context = getApplicationContext();
	}
	public static Context getContext() {
		return context;
	}
}

Changes in AndroidManifest.xml

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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.networktest"
android:versionCode="1"
android:versionName="1.0" >
……
	<application
		android:name="com.example.networktest.MyApplication"
	…… >
	……
	</application>
</manifest>

Access context wherever you needed, for example:

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public static void sendHttpRequest(final String address,
	final HttpCallbackListener listener) {
	…… //do something
	if (!isNetworkAvailable()) {
		Toast.makeText(MyApplication.getContext()
				, "network is unavailable"
				,Toast.LENGTH_SHORT).show();
		return;
	}
	…… //do something
}