tap forms android

ontouchevent to receive. If the ontouchevent passed to the top also returns false, the event "disappears" and the next event is not received. 3. Why use GETRAWX and Getrawy to obtain coordinates in dispatchtouchevent ()Getx and gety get the coordinates relative to the clicked view, and Getrawx gets the coordinates relative to the screen. And we want to see the ripple effect of water, should be from the screen relative to the point is clicked to diffuse the waves.4, Initparametersforchild () in

Motive explanationYou can simulate keyboard events, touch-screen events keyevent, and Text,tap by using the ADB shell-I inputBut the target Android 4.0.3 system input in hand only supports text and keyevent, does not support tap and cannot simulate touch-click events.usage: input [text|keyevent] input text Then began to look for alternative solutions for an

, MenuItem Item) {switch (Item.getitemid ()) {//Menu click event Case R.id.menu_delete://delete log.d (TAG, "delete Menu"); listSuchThe core code is above, the implementation of long press DELETE, the effect is good. If you don't know, you can contact me. Hope that our search products can grow into a tree day by day.good night. If you want to join our team, you can also contact me. I will give you the help you can, but also look forward to everyone's happy cooperation.

1, custom adapter in the configuration:1 Public classMyadapterextendsbaseadapter{2 3 intMselect = 0;//Selected Items4 5 ......6 7 Public voidChangeselected (intPositon) {//Refresh Method8 if(Positon! =mselect) {9Mselect =Positon;Ten notifydatasetchanged (); One } A } - - the - PublicView GetView (intposition, View Convertview, ViewGroup parent) { - //if (convertview==null) { -Layoutinflater factory =Layoutinflater.from (context); +View V = (view) factory.inflate (R.lay

; Import Android.util.AttributeSet; Import Android.view.GestureDetector; Import android.view.MotionEvent; Import Android.view.View; public class MyView extends View { Private Gesturedetector Mgesturedetector; Public MyView (context context, AttributeSet Attrs) { Super (context, attrs); Mgesturedetector = new Gesturedetector (context, new Mygesturelistener (context)); Setlongclickable (TRUE); This.setontouchlistener (New Ontouchlistener ()

@Overridepublic boolean ontouchevent (Motionevent event) {Super.ontouchevent (event);Switch (event.getaction ()) {Case Motionevent.action_down:After tapping the screen, set the radius to 0,alpha to 255.Mybean bean = new Mybean ();Bean.radius = 0; Click the rear radius to first set to 0Bean.alpha = Maxalpha; Alpha set to Maximum value 255Bean.width = BEAN.RADIUS/8; Stroke width This randomBean. X = (int) event.getx (); The x-coordinate of the drawn circleBean. Y = (int) event.gety (); The y-coord

Android Development and Implementation of floating forms, android forms Suddenly interested in the floating form, a small Demo was made to query the information, the effect is to click the button, close the current Activity, display the floating window, the window can be dragged, double-click to disappear. As follows:

Similar format,Listview_item.xmlListView Highly Adaptive Code:public static void Setlistviewheightbasedonchildren (ListView listview) {ListAdapter ListAdapter = Listview.getadapter ( ); if (listadapter = = null) {return;} int totalheight = 0;for (int i = 0; i Conflict:If the ListView is not self-adaptive if nested in ScrollViewPlease call the Adaptive method after Setadapter. If you have any good implementation of the table method in addition to Recyclerview please recommend thank you.The ListVi

Use Xarain to download the forms program for the first time, prompting for errors.C:\Program Files (x86) \msbuild\xamarin\android\xamarin.android.common.targets (236,2): Error xa5208:download failed. Download Https://dl-ssl.google.com/android/repository/support_r19.0.1.zip and put it to the C:\Users\Admin\ appdata\local\xamarin\android.support.v4\19.0.1 directory

Floating forms for android Development Suddenly interested in the floating form, a small Demo was made to query the information, the effect is to click the button, close the current Activity, display the floating window, the window can be dragged, double-click to disappear. As follows: Its usage principle is very simple. It is implemented by the management class WindowManager.1. First, add the permission

Previously introduced three kinds of data storage forms of Android system, http://www.jb51.net/article/99468.htm. Today, there are two other types of content providers and networked storage, respectively. Some people may think that the memory provider and networked storage are more inclined to manipulate the data than the data, but these two ways are really related to the data, so here is a brief descriptio

Two main forms of onClick events in Android development: androidonclick The first and most common form is to add a listener for The onClick event to stimulate the event to be processed when the button is clicked. For example: Btn1.setOnClickListener (new OnClickListener () {@ Overridepublic void onClick (View v) {// TODO Auto-generated method stubToast. makeText (MainActivity. this, "" + "by adding a listen

Android forms are an important part of Google's enterprise strategy. An extensible view of Views can be used to create applications, including lists, grids, text box boxes ), button buttons), even including an embedded web browser. The width of the text box is set to FILL_PARENT; the width of other elements is set to WRAP_CONTENT. The default alignment mode is left alignment. Weight is not set on the left.

On Android Systems, ApplicationsProgramWhere can I install it? According to your experience, the system applications are installed in the/system/APP/directory to express an application together with the APK and odex files; The software installed by yourself is installed in the/data/APP directory, and also exists in the APK format. There seems to be no problem, but why can't I find many programs under these two directories? Because in addition

Excerpt from: http://blog.csdn.net/xyz_lmn/article/details/12000941Three manifestations of Holo themeHolo theme is android4.0 's set of UI styles, Holo theme A total of three styles-holo Light,holo Dark,holo Light with Dark action bars. Android 4.0 mobile phone system integrated with Holo theme control, simple application directly call these controls, you can design a holo style of application, and native system style is very consistent. Holo theme is

1. Use NV21 format Yuvimage class for saving very high efficiency String FileName = "Img_" + string.valueof (Index) + ". jpg"; File sdroot = Environment.getexternalstoragedirectory (); String dir = "/picture/"; File MkDir = new file (Sdroot, dir), if (!mkdir.exists ()) {mkdir.mkdirs ();} File PictureFile = new file (sdroot, dir + fileName), if (!picturefile.exists ()) {try {picturefile.createnewfile () ; FileOutputStream Filecon = new FileOutputStream (picturefile); Yuvimage im

1. Use Intent to call external player for video playbackIntent Intent = new Intent (Intent.action_view); String type = "Video/mp4"; Uri uri = uri.parse ("/sdcard/123.mp4"); Intent.setdataandtype (URI, type); StartActivity (intent);2. Play local videoPut the video file under the Res/raw file of project engineeringVideoview Videoview;videoview = (videoview) This.findviewbyid (R.id.videoview); String uri = "android.resource://" + getpackagename () + "/" + R.raw.videoname;videoview.setvideouri (Uri.

1 Forms defines interfaces2 3 usingSystem;4 usingSystem.Collections;5 usingSystem.Collections.Generic;6 7 namespace 8 {9 Public InterfaceisystemsmsTen { One //Send SMS A voidSendsms (stringNumstringcontext); - } - } the - Platform Implementation - usingSystem; - usingSystem.Collections; + usingSystem.Collections.Generic; - usingxamarin.forms; + A usingAndroid.app; at usingandroid.content; - usingAndroid.runtime; - usinga