cast button app

An exception occurred when you click the app icon to display the session List. 07-06 10:40:46. 015: E/androidruntime (10057): Fatal exception: Main10:40:46 07-06. 015: E/androidruntime (10057): Java. lang. runtimeexception: unable to start activity componentinfo {COM. txrj. SMS/COM. txrj. SMS. activity. conversationlistactivity}: Java. lang. classcastexception: Android. widget. imagebutton cannot be cast to

============ Problem Description ============Heroes, Ben does not understand Android, ask a solution can be achieved:An already released app, this app has a button when it goes in, the normal situation is we click this button by hand, will trigger this button event;Now I wan

The Android monitor return key needs to override the OnKeyDown () methodHOME Button Keycode==keyevent.keycode_home @Override Public boolean onKeyDown (int keycode, keyevent event) { if (keycode = = Keyevent.keycode_back Event.getrepeatcount () = = 0) { //do someting return true; } Return Super.onkeydown (KeyCode, event); }Instance: Press the return key again to exit the appPrivate long exittime = 0

==================== Problem Description ====================Heroes, Ben does not understand Android, ask a solution can be achieved:An already released app, this app has a button when it goes in, the normal situation is we click this button by hand, will trigger this button

Mobile phone app Design code refers to the entire app interface for visual design UI style unification, the interface elements of the style, color, icon button and size set the uniform norms and use principles. Facilitate future coordination and collaboration and app Vision iterations. The first part: the icon design

Implementation of button response IOS9 Implementation of button response in IOS 9 app development tutorial iOS9The main button is to implement the user interaction, that is, to implement the response. The way buttons implement responses can be divided into two different types of buttons: one is the response of the edit

The author's experience from front-end to UI to interaction to product manager.What is the most appropriate height for the app's text boxes and buttons? This problem can be simplified as: How high is the App login button?Recently the company made a iphone6plus design draft. It's @3x in size. That is, all interface elements, including button width height rounding,

-designed icons, it lot better a lot more than the bare cross forks of the past. These icons are some of the most suitable icons for the current button text in several sets of charts given by jquery Mobile, and in addition to these icons, JQuery Mobile has prepared other icons for developers in 17 different styles, which I've sorted out in table 6-1.Jquerymobile availability is getting higher, the entry threshold is low, and you can write less code to

Unlike PCs, all Windows Phone devices have a Back button that allows users to navigate backwards between the pages of the app. If the user presses the back button again when they go to the first page of the app, the operating system suspends your app and navigates the user t

How does Cordova for android handle the exit button event in the App? cordovaandroid The project needs to add the processing of the Return key to the HTML5 Android App. It is found that adding the return key directly to the Activity does not work. After analyzing the cordova source code, it is found that the return key has been processed by WebView, so we can onl

Unify the "Back" button style for all pages of the appIf you want to uniformly set the return button style for all the app's pages, first customize the Wznavigationcontroller class to inherit the Uinavigationcontroller class, and then override Pushviewcontroller in the custom class: Animated: The method can be. // override Navc's Pushvc method so that the "back" button