android getapplicationcontext

) { returnthis.get(requestUrl, imageListener, maxWidth, maxHeight, ScaleType.CENTER_INSIDE); }7. Loading pictures with NetworkimageviewNetworkimageview is a custom control that inherits from ImageView and encapsulates the ability to request a network load picture.Refer to the layout first:com .android .volley .toolbox android:id= "@+id/nv_image" android:layout_width= "200DP" android:layout_height= "200DP"

changeServiceThing (String what) {Toast. makeTe Xt (getApplicationContext (), what + "transformed, changeServiceThing", Toast. LENGTH_LONG ). show () ;}} copy the code IService: public interface IService {public void doChange (String what);} click "enable service" in the result and then "bind service ", it is useless to directly click "Close service" after this execution. You must first "Release the service" and then "Close the service ". If you dire

);// ================================== Receive List List I. Global Variables If some special application-level parameters are not convenient to use intent to pass parameters, it is easy to think whether global or static variables can be used? Static variables in Java are suitable here, but their values are lost after the Activity calls System. exit (0) or finish. In android, ApplicationContext is used in a more elegant way. This global variable met

Continue the android learning journey. Today, we use a small example to get the SD card capacity and the phone ROM capacity. The Code is as follows: Package com. urovo. sdcardspace; import java. io. file; import android. OS. bundle; import android. OS. environment; import android. OS. statFs; import

Android app source code is based on android's personal privacy monitoring project, Android android The system draws on the advantages of existing security software and designs four functional modules: permission access monitoring, traffic monitoring, application risk monitoring, and signature verification. It also addresses the shortcomings of existing

Android android gets the network status, Android android gets First, add the permission in AndroidManifest. xml. 1. Determine whether a network connection exists. public boolean isNetworkConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager)

() getActivity() method does not return when the lifecycle is in and between null . So we can fragment create a reference at initialization time Context . fragmentdestroy the reference at the time of destruction. The code is as follows: @Override public void Onattach [activity activity] { Super.onattach (activity); Mctx = Activity;//mctx is a member variable, context reference } @Override public void Ondetach () { super.ondetach (); Mctx = null; } (ii) Rational u

Custom Dialog Base versionMost of the time, when we use the Android SDK to provide the Alerdialog, will have different effect because of your system different, just like you brush is MIUI system, the pop-up box will display at the top! Here is a simple introduction to the application of the custom pop-up box. First create the Layout file dialog: Code: Second, create the Mycustomdialog class to inherit dialog: Code: Package com.xz

Recently, after using the Onjsalert method of WebView, I found that the HTML page clicked did not respond, the code is as follows: Mwebview.setwebchromeclient (New Webchromeclient () { @Override public boolean Onjsalert (WebView view, String URL, String message, jsresult result) { if (message!=null) { //todo //Pop-up dialog Toast.maketext ( Getapplicationcontext (), message, Toast.length_long). Show ();

1. Because you need to delete files, you need the following permissions： 2. Core Code Copy Code code as follows: Package Com.example.deleteyoumi; Import Java.io.File; Import Android.os.Bundle; Import Android.os.Handler; Import Android.os.Message; Import android.app.Activity; Import Android.view.Menu; Import Android.view.View; Import Android.view.View.OnClickListener; Import Android.widget.Button; Import Android.widget.Toast; /* * @author: Zhenghaibo *web:http://blog.c

This example for you to share the Android activity recovery and Operation timeout processing for your reference, the specific content as follows 1. Recovery of activity Handling for multiple activity exits Key code: 1), New Activity management class: public class Activitycollector { private static list 2, create the base class baseactivity, and make all the activity inherit from the base class. When you create it, you add it to the

My Android notes-my knowledge about android and my Android notes-androidAfter coding for such a long time, I recorded some of my concepts about Android. Most of the content below is sourced from network information and official documents. 1. The core of the Android operating

); Appcontext.setloc (Isloc); Appcontext.setrING (isRing); Appcontext.setvib (ISVIB); Intent Intent = new Intent (); Intent.setclass (Getapplicationcontext (), listenphone.class); if (Btnlisten.gettext (). toString (). Equals ("Start monitoring")) {Btnlisten.settext ("Stop Monitoring"); Btnlisten.setbackgroundcolor (color.red); Start Service StartService (intent); }else{Btnlisten.settext ("Start monitoring"); Btnlist

What is a service: a long running background with no interface components,Android is an application scenario:Weather forecast: The logic of the backend connection server to get the latest weather information every once in a whileStock Display: Background of the logic of the connection server, every time to get the latest stock informationMP3 Player: Play music in the background for a long time.New Thread () {}.start (); The child thread has no interfa

Startupactivity extends activity {@Override protected void onCreate (Bundle savedinstancestate) {Super . OnCreate (Savedinstancestate); Setcontentview (R.layout.activity_startup); * * Hide the status bar at the bottom of the screen of the tablet running Android 4.0 +/try {String procid = "79"; if (Android.os.Build.VERSION.SDK_INT >= Android.os.Build.VERSION_CODES. Ice_cream_sandwich) ProcID = "42"; ICS//requires root permission Process pro