Android

CopyCode The Code is as follows: Package com. Demos; Import Android. App. activity; Import Android. OS. Bundle; Import Android. View. view; Import Android. View. View. onclicklistener; Import Android. widget. Button; Public class getscreenactivity

1. Add the XML file rounded_editview.xml under drawable. CopyCode The Code is as follows: Android: Shape = "rectangle"> Android: Top = "10dp" Android: Right = "10dp" Android: Bottom = "10dp"> 2. Reference this XML in the background

There is a need. We click to exit the application in the menu item, and the application exits without returning to MainActivity. Design: There are two application interfaces: MainActivity and BActivity, and the general class ExitUtil for the program.

JSON is a lightweight object with small data size, convenient transmission, and easy to parse! Create a new tool class JsonUtil to obtain the data returned by the request. Copy codeThe Code is as follows: public class JsonUtil { Private static final

Previously, I have discussed how to create a menu item in an article. However, this method is inefficient and difficult to maintain. Now, another method is used to create a menu. MenuInflater. With this class, you can easily create menu items as

AppWidgetProvider is used to display plug-ins on the HOME page. Steps:1. Provide AppWidget with an meta-layout file appwideprovider_provider.xml to display the Widget interface.2. Create a class that inherits from AppWidgetProvider and overwrite the

AIDL: Android Interface Definition Language, which is a description Language of the android internal process communication Interface. Through this Language, we can define the communication interfaces between processes. ICP: Interprocess

The program interface is as follows! 1. layout file: Copy codeThe Code is as follows: Android: layout_width = "match_parent" Android: layout_height = "match_parent" Android: orientation = "vertical"> Android: id = "@ + id/editText"Android:

Our applications retrieve image data from the network more or less and then display it. The following example shows how to obtain images from the network! First, let's take a look. The interface has three controls, one EditText, one Button, and one

Copy codeThe Code is as follows: private void alertScreenDialog (){ DisplayMetrics dm = new DisplayMetrics (); GetWindowManager (). getDefaultDisplay (). getMetrics (dm ); String optStr = "cell phone screen resolution:" + dm. widthPixels + "x" + dm.

Tip: Org. xmlpull. v1.XmlPullParserException: PI must not start with xml (position: unknown» timeout @ in java. io. InputStreamReader @ 47ec2770) Org. xml. sax. SAXParseException: PI must not start with xml (position: unknown xm @ 3:5 in java. io.

First paste the source Http://zrgiu.com/blog/2011/01/making-your-android-app-look-better/ Http://www.dibbus.com/2011/02/gradient-buttons-for-android/ Http://www.dibbus.com/2011/08/even-more-gradient-buttons-for-android/ Then let's take a look at the

Copy codeThe Code is as follows: Android: layout_width = "match_parent" Android: layout_height = "match_parent" Android: orientation = "vertical"> Android: layout_height = "wrap_content" Android: layout_width = "wrap_content" Android:

Copy codeThe Code is as follows: Android: layout_width = "fill_parent" Android: layout_height = "wrap_content" Android: background = "# fff" Android: paddingBottom = "5dp" Android: paddingLeft = "5dp" Android: paddingRight = "2dp" > Android: layout_

1. Use LinearLayout and RelativeLayout whenever possible. Do not use absolute layout. 2. Try dip and sp instead of px. 3. provide different layout files and images for different resolutions. For example: 4. Set multi-resolution support in

Copy codeThe Code is as follows: // hide the Input Method InputMethodManager imm = (InputMethodManager) getApplicationContext (). getSystemService (Context. INPUT_METHOD_SERVICE ); // Display or hide the Input Method Imm. toggleSoftInput (0,

1. scale down an image Copy codeThe Code is as follows: // zoom Public static Bitmap zoomBitmap (Bitmap bitmap, int w, int h ){ Int width = bitmap. getWidth (); Int height = bitmap. getHeight (); Matrix matrix = new Matrix (); Float scaleWidth = w/

Main. xml file: Copy codeThe Code is as follows: Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: orientation = "horizontal" > Android: layout_width = "fill_parent" Android: layout_height =

To obtain the highest permission by using code, you must first get the root permission on your phone. If there is no root, please do not read it down. First, write a static method. Copy codeThe Code is as follows: public static boolean isRoot

1. Progress of the special effect button Previous thought: css sets the div style, implements the div response to the event in js, and changes the div style to achieve the animation effect. 1: Animation Copy codeThe Code is as follows: var bb =