使用 drwable 对象对图像进行动画处理

发布于 2024-11-02 14:16:15 字数 1590 浏览 0 评论 0原文

我是 android 新手，如果有人可以帮助我，我将不胜感激。我正在尝试对一系列图像（图片）进行动画处理。我读了一些相关内容，似乎一个好方法是使用可绘制对象。我的代码如下所示：

我有一个animation.xml文件，其中：

<animation-list xmlns:android = "http://schemas.android.com/apk/res/android" android:oneshot="false">
<item android:drawable="@drawable/im1" android:duration="200" />
<item android:drawable="@drawable/im2" android:duration="200" /> </animation-list>

我在main.xml中定义了一个图像视图：

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/widget32"
android:layout_width="fill_parent"
android:layout_height="fill_parent"> <ImageView
android:id="@+id/picView"
android:layout_width="500px"
android:layout_height="200px"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"> </ImageView> </RelativeLayout>

最后，在我的活动中，我使用了可绘制对象来执行动画。像这样：

public class animatePic extends Activity

{

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    ImageView image = (ImageView) findViewById(R.id.picView);
    image.setVisibility(ImageView.VISIBLE);
    image.setBackgroundResource(R.drawable.animation);
    AnimationDrawable imAnimate = (AnimationDrawable)image.getBackground();
    imAnimate.start();

}

}

我的问题是我只得到第一张图像而不是无限循环的图像。有人可以帮忙吗？我正在android 2.1平台上进行开发（这与此有什么关系吗？:)）。

非常感谢

李皮

原文

i am new to andriod and i would appreciate it if someone can help me.
i am trying to animate a sequence of images (pictures). i read a little about it and it seems that a good way to do it , is to use the drawable object. my code looks like this:

i have an animation.xml file with:

<animation-list xmlns:android = "http://schemas.android.com/apk/res/android" android:oneshot="false">
<item android:drawable="@drawable/im1" android:duration="200" />
<item android:drawable="@drawable/im2" android:duration="200" /> </animation-list>

i defined an image view in the main.xml:

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/widget32"
android:layout_width="fill_parent"
android:layout_height="fill_parent"> <ImageView
android:id="@+id/picView"
android:layout_width="500px"
android:layout_height="200px"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"> </ImageView> </RelativeLayout>

finally, in my activity, i used the drawable object to do the animation. like this:

public class animatePic extends Activity

{

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    ImageView image = (ImageView) findViewById(R.id.picView);
    image.setVisibility(ImageView.VISIBLE);
    image.setBackgroundResource(R.drawable.animation);
    AnimationDrawable imAnimate = (AnimationDrawable)image.getBackground();
    imAnimate.start();

}

}

my problem is that i get only the first image instead of endless loop of images.
can anyone help with this?? i am doing the developement on android 2.1 platform (does this has anything to do with this? :)).

many thanks

lipi

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