Android

Draw a string on the canvas with a width and height to center the string horizontally and vertically: Horizontal center is simple, painting.Settextalign(Align. center); then, set the X coordinate of drawtext to width/2, and the vertical center is a

// ----------------- Xuqingfeng ---- wildcard use --------------------Public static double standardwidth = 480.0;Public static double standardheight = 800.0;Public static double currentwidth = 0;Public static double currentheight = 0;Public static

There are actually a lot of problems with the Sina Weibo client created before the Chinese New Year's Eve. Now we have made some changes, such as optimizing the listview and asynchronously loading the images, this not only guarantees the speed of

Enable Android Project In the eclipse environment, select [file-> New-> project] from the menu in the upper left corner. The [new project] dialog box is displayed. eclipse is a common editing environment that supports the creation of many types of

Problems and methods that are often difficult to solve in Android(The third method goes through four days of suffering ..... Ah) 1. Error:Build failedD: \ workspace \ Ganji \ build. xml: 144: the following error occurred while executing this

I have introduced the issue of inter-activity animation jump in a previous blog, but the real software discovery does not meet our requirements, because overridependingtransition (INT enteranim, intexitanim) this function can only be used to enter

We often use the button on the interface, but usually the button cannot be clicked after it is clicked. If the user clicks twice consecutively, the NAR error will be reported, resulting in poor interaction. If we customize the button click effect,

Because a new project requires a font and underline effect, the visual effect can be forged through images. However, in order to reflect the technical content, I want to use textview to underline the effect. There are two methods. The first one

Title layout activity_main_title.xml         KeyCode:   Requestwindowfeature (window. feature_custom_title); setcontentview (R. layout. activity_main); getwindow (). setfeatureint (window. feature_custom_title, R. layout.

Screen direction parameters:  Activityinfo. screen_orientation_unspecified, // Unspecified. This is the default value. The Android system selects the appropriate direction. Activityinfo.

After learning about the service, I will not talk about some of the common online services. I would like to say something that is easy to misunderstand. 1. are services created in new processes?Actually not. I wrote in the dev guide: Reference

Method 1: rewrite the Java code of the onbackpressed Method @ Override Public void onbackpressed (){ // Do something what you want Super. onbackpressed (); } Method 2: rewrite the dispatchkeyeventjava code @ Override Public Boolean

Android obtains information about installed applications (icons, names, version numbers, and packages) There is an app on the Android Market that is relatively popular and can display, manage, and share apps installed on Android phones. However, it

BTN. setonclicklistener (New onclicklistener () {@ overridepublic void onclick (view v) {// use the camera app that comes with the system: Photograph intent = new intent (mediastore. action_image_capture); // create a file to save the imagefileuri =

Scroll embedded in the content area of the android browser cannot be rolled. This problem has plagued me for some time. This bug was mentioned a long time ago. However, android2.x cannot be resolved. 4. x does this problem have a

Today we have implemented an example of frame animation, First, create a frame. xml file under Res/anim to store the frame animation.

Because each application runs in its own process space and can run another service process from the application UI, objects are often transferred between different processes. On the Android platform, a process generally cannot access the memory

In development, we need to bind some data to the desktop. This requires adapterview. Adapterview is a subclass of viewgroup. It determines how to bind a view to a special data type through the adapter. Adapterview is very helpful when you display

Recently, the viewflipper class was used in the project. It seems that the effect is really amazing. Today I tried to do it myself. It is really good. First, define viewflipper. XML in layout.

Asynchronous lightweight implementation;Asyncetask: 1. functions are similar to handler, which are derived to prevent blocking of UI thread operations. 2. asynctask is a lightweight Implementation of handler. The model is similar to intentservice