Android ViewFlipper 仅对第一个 URL 图像进行动画处理

Question

我有一个带有 ViewFlipper 的 android activity。它从 url 中选取图像并显示在布局中。它应该为所有图像设置动画。但是，它只对第一个 url 图像进行动画处理并不断重复。它不显示其他图像。下面是代码：

public class DynamicViewFlipper 扩展 Activity {

/**
 * List of Image URL that will populate the ViewFlipper
 */
private List<String> imageURLs = Arrays.asList(new String[] { 
        "http://example.com/image1.jpg",
        "http://example.com/image2.jpg", 
        "http://example.com/image3.jpg",
        "http://example.com/image4.jpg"}); 



private int index = 0;

private TextView mTextView;

private ViewFlipper mViewFlipper;

private Button mNextButton;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_view_flipper);
    mTextView = (TextView) findViewById(R.id.title);
    mViewFlipper = (ViewFlipper) findViewById(R.id.viewFlipper);


            ImageView image = new ImageView(getApplicationContext());
            UrlImageViewHelper.setUrlDrawable(image, getNextImage(), R.drawable.loading);
            mTextView.setText("Showing: " + index);
            mViewFlipper.addView(image);
            mViewFlipper.showNext();
            mViewFlipper.setAutoStart(true);
            mViewFlipper.setFlipInterval(2000);
            mViewFlipper.startFlipping();

    mViewFlipper.setInAnimation(AnimationUtils.loadAnimation(getApplicationContext(), android.R.anim.slide_in_left));
    mViewFlipper.setOutAnimation(AnimationUtils.loadAnimation(getApplicationContext(), android.R.anim.slide_out_right));
}

protected String getNextImage() {
    if (index == imageURLs.size())
        index = 0;
    return imageURLs.get(index++);
}

}

Answer 1

你应该有这样的东西：

for(String url: imageURLs){
   ImageView image = new ImageView(getApplicationContext());

   UrlImageViewHelper.setUrlDrawable(image, url,R.drawable.loading);

  mViewFlipper.addView(image);
}

mViewFlipper.setAutoStart(true);
mViewFlipper.setFlipInterval(2000);
mViewFlipper.startFlipping();

Android ViewFlipper 仅对第一个 URL 图像进行动画处理

Android ViewFlipper animating only the first URL image

android

viewflipper

autostart