auto rotate android

This article mainly introduces how to use rotate to achieve the effect of continuous rotation of images in Android . Android platform provides two kinds of animation, one is Tween animation, that is, through the scene of the object constantly do image transformation (translation, scaling, rotation) to produce animation effect; the second type is Frame animation,

When customizing the control and using the Surfaceview to lock the canvas with Serfaceholder to draw the game, the tank picture needs to be drawn according to the direction of the tank, so the canvas's rotate (float Degrees) method, tried many times to cause the picture on the screen to be a mess, not according to the imagination. After a lot of attempts finally mastered a rule:The canvas rotates following when it is drawn:1, Canvas.draw (bitmap, left

Type of animationAndroid animation is made up of four different typesin XML Alpha Gradient Transparency Animation effect Scale Gradient Dimension Stretch animation effect Translate Move animation effect on picture transition position Rotate Picture Transfer rotation animation effect In Javacode Alphaanimation Gradient Transparency Animation

provide timing.Interpolatedtime is 0~1, which is the percentage of time.Animation ani=new Animation () {@Overrideprotected void applytransformation (float interpolatedtime,transformation t) {/ /TODO auto-generated method Stubmyview.setdegree ((int) (INTERPOLATEDTIME*300F));}; Ani.setduration (n); Myview.startanimation (ANI);//===========================================================================Define your own view, setdegress can change the arc

1. click the button, specify the action and uri, and set the result code (ResultCode) to reach the Gallery of the default album on the mobile phone. The Code is as follows:1. public void onClick (View v ){2. // TODO Auto-generated method stub3. Intent intent = new Intent (Intent. ACTION_PICK,4. android. provider. MediaStore. Images. Media. EXTERNAL_CONTENT_URI); // start the Photo Gallery5. startActivityFo

follows: Copy Code code as follows: Android:layout_width= "Fill_parent" android:layout_height= "Fill_parent" Xmlns:android= "Http://schemas.android.com/apk/res/android" > Android:id= "@+id/button_scale" Android:layout_width= "Wrap_content" android:layout_height= "Wrap_content" android:text= "Scale" android:layout_x= "5DP" android:layout_y= "383DP"/> Android:id= "@+id/button_rotate" Android:layout_width= "Wrap_content" android:

of less than 1.0 indicates a contractionValue greater than 1.0 indicates magnification Toxscale [float]Toyscale[float] Stretch dimensions on X, y coordinates at the end of the animation Pivotx[float]Pivoty[float] is the starting position of the animation's x and Y coordinates relative to the object Attribute value Description: value from 0%-100%, 50% is the midpoint position on the x or y direction coordinate of the object

The previous article described Android taking photos, saved and displayed in the ImageView control, which continues to describe the Android image processing technology, including: by opening pictures in the album, using the Matrix to zoom, rotate, move, contrast, brightness, Saturation operation, we hope to help you.one. Show Open picturefirst, set the Activity_m

animation ends, the scaling dimensions on the X and y coordinates Pivotx[float]Pivoty[float] The start position of the x and Y coordinates of the animation relative to the object Property value Description: From 0%-100%, 50% is the midpoint position on the x or Y coordinate of the object table four translate picture conversion position Move animation effect android:fromxde

Type of animation Android animation is made up of four different types in XML Alpha gradient Transparency animation effect Scale gradient dimension stretch animation effect Translate picture conversion position Move animation effect Rotate Picture Transfer rotation animation effect In Javacode Alphaanimation Gradient Transparency animation effect Scaleanimation Gradient dimension stretch animation