Android动画Animation之Frame实现类似电影的动画效果
Android动画Animation之Frame实现类似电影的动画效果
Frame 动画,即顺序播放事先做好的图像,跟电影类似。
接下来的案例是点击按钮实现播放动画,点击停止实现停止动画播放!
1、效果图:
2、main.xml文件很简单:
[html]
- <Button
- Android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:id="@+id/button"
- android:text="开始"/>
- <Button
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:id="@+id/stop"
- android:text="停止"/>
- <ImageView
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_gravity="center_vertical"
- android:id="@+id/image"/>
[html]
- <?xml version="1.0" encoding="utf-8"?>
- <animation-list xmlns:android="http://schemas.android.com/apk/res/android" >
- <item android:drawable="@drawable/girl_1" android:duration="100" />
- <item android:drawable="@drawable/girl_2" android:duration="100" />
- <item android:drawable="@drawable/girl_3" android:duration="100" />
- <item android:drawable="@drawable/girl_4" android:duration="100" />
- <item android:drawable="@drawable/girl_5" android:duration="200" />
- <item android:drawable="@drawable/girl_6" android:duration="500" />
- <item android:drawable="@drawable/girl_7" android:duration="500" />
- <item android:drawable="@drawable/girl_8" android:duration="200" />
- <item android:drawable="@drawable/girl_9" android:duration="100" />
- <item android:drawable="@drawable/girl_10" android:duration="100" />
- <item android:drawable="@drawable/girl_11" android:duration="100" />
- </animation-list>
4、最后是java代码:
[java]
- package cn.csdn.anim;
- import android.app.Activity;
- import android.graphics.drawable.AnimationDrawable;
- import android.os.Bundle;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- import android.widget.ImageView;
- public class FrameActivity extends Activity implements OnClickListener {
- private Button button, stop;
- private ImageView image;
- private AnimationDrawable attackAnimation;//定义动画的对象
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- init();
- }
- private void init() {
- image = (ImageView) findViewById(R.id.image);//显示动画的imageview
- button = (Button) findViewById(R.id.button);//开始动画
- stop = (Button) findViewById(R.id.stop);//停止动画
- button.setOnClickListener(this);
- stop.setOnClickListener(this);
- image.setBackgroundResource(R.drawable.frame);//设置显示动画的image的背景资源参数是int,就是你自己写的frame.xml,里面是所有相关的图片
- attackAnimation = (AnimationDrawable) image.getBackground();
- }
- @Override
- public void onClick(View v) {
- switch (v.getId()) {
- case R.id.button:
- attackAnimation.start();//开始动画
- break;
- case R.id.stop:
- attackAnimation.stop();//停止动画
- break;
- }
- }
- }
AnimationDrawable类是:
An object used to create frame-by-frame animations, defined by a series of Drawable objects, which can be used as a View object's background.
The simplest way to create a frame-by-frame animation is to define the animation in an XML file, placed in the res/drawable/ folder, and set it as the background to a View object. Then, call start()
to run the animation.
An AnimationDrawable defined in XML consists of a single <animation-list>
element, and a series of nested <item>
tags. Each item defines a frame of the animation.
最简单的方法来创建一个frame-by-frame动画定义动画在XML文件中,放置在杂志/可画/文件夹,并将它设置为背景,一个视图对象。然后,叫开始()运行的动画。
定义一个AnimationDrawable在XML组成一个单一的< animation-list >元素,一系列的嵌套的<项目>标签。 每一项定义了一个帧动画
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