Question

我正在使用另一个列表视图来代替尝试按照示例应用程序中给出的3D转换的图像视图。但是列表视图位于屏幕右侧而不是左侧，并且单词被反转。我的列表看起来像这样：

enter image description here

我的代码是：

public class EventListActivity extends ListActivity  {

private ListView lv1, lv2;
private ViewGroup mContainer;
private ArrayList<ArrayAdapter<String>> arr;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub

    super.onCreate(savedInstanceState);
    setContentView(R.layout.eventlist);
    arr = new ArrayList<ArrayAdapter<String>>();
    String[] eventlist = getResources().getStringArray(R.array.eventlist);
    String[] eventlist1 = getResources().getStringArray(R.array.techc);
    String[] eventlist2 = getResources().getStringArray(R.array.presc);
    String[] eventlist3 = getResources().getStringArray(R.array.roboc);
    String[] eventlist4 = getResources().getStringArray(R.array.managec);
    String[] eventlist5 = getResources().getStringArray(R.array.literaryc);
    String[] eventlist6 = getResources().getStringArray(R.array.creationc);
    String[] eventlist7 = getResources().getStringArray(R.array.gamingc);
    ArrayAdapter<String> a1 = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, eventlist1);
    ArrayAdapter<String> a2 = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, eventlist2);
    ArrayAdapter<String> a3 = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, eventlist3);
    ArrayAdapter<String> a4 = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, eventlist4);
    ArrayAdapter<String> a5 = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, eventlist5);
    ArrayAdapter<String> a6 = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, eventlist6);
    ArrayAdapter<String> a7 = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, eventlist7);
    arr.add(a1);
    arr.add(a3);
    arr.add(a2);

    arr.add(a4);
    arr.add(a5);
    arr.add(a6);
    arr.add(a7);
    final ArrayAdapter<String> a = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, eventlist);
    lv1 = getListView();
    lv2 = (ListView) findViewById(R.id.list2);
    mContainer = (ViewGroup) findViewById(R.id.container);
    lv1.setAdapter(a);
    lv2.setClickable(true);
    lv2.setFocusable(true);
    mContainer
            .setPersistentDrawingCache(ViewGroup.PERSISTENT_ANIMATION_CACHE);
    lv1.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            // TODO Auto-generated method stub
            lv2.setAdapter(arr.get(arg2));

            applyRotation(arg2, 0, 90);

        }
    });

}

protected void applyRotation(int position, int start, int end) {
    // TODO Auto-generated method stub
    final float centerX = mContainer.getWidth() / 2.0f;
    final float centerY = mContainer.getHeight() / 2.0f;

    // Create a new 3D rotation with the supplied parameter
    // The animation listener is used to trigger the next animation
    final Rotate3dAnimation rotation = new Rotate3dAnimation(start, end,
            centerX, centerY, 310.0f, true);
    rotation.setDuration(500);
    rotation.setFillAfter(true);
    rotation.setInterpolator(new AccelerateInterpolator());
    rotation.setAnimationListener(new DisplayNextView(position));

    mContainer.startAnimation(rotation);
}

private final class DisplayNextView implements Animation.AnimationListener {
    private final int mPosition;

    private DisplayNextView(int position) {
        mPosition = position;
    }

    public void onAnimationStart(Animation animation) {
    }

    public void onAnimationEnd(Animation animation) {
        mContainer.post(new SwapViews(mPosition));
    }

    public void onAnimationRepeat(Animation animation) {
    }
}

/**
 * This class is responsible for swapping the views and start the second
 * half of the animation.
 */
private final class SwapViews implements Runnable {
    private final int mPosition;

    public SwapViews(int position) {
        mPosition = position;
    }

    public void run() {
        final float centerX = mContainer.getWidth() / 2.0f;
        final float centerY = mContainer.getHeight() / 2.0f;
        Rotate3dAnimation rotation;

        if (mPosition > -1) {
            lv1.setVisibility(View.GONE);
            lv2.setVisibility(View.VISIBLE);
            lv2.requestFocus();

            rotation = new Rotate3dAnimation(90, 180, centerX, centerY,
                    310.0f, false);
        } else {
            lv2.setVisibility(View.GONE);
            lv1.setVisibility(View.VISIBLE);
            lv1.requestFocus();

            rotation = new Rotate3dAnimation(90, 0, centerX, centerY,
                    310.0f, false);
        }

        rotation.setDuration(500);
        rotation.setFillAfter(true);
        rotation.setInterpolator(new DecelerateInterpolator());

        mContainer.startAnimation(rotation);
    }
}}

我的xml代码是`

<ListView
    android:id="@android:id/list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layoutAnimation="@anim/layout_bottom_to_top_slide"
    android:persistentDrawingCache="animation|scrolling" />

<ListView
    android:id="@+id/list2"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:scaleType="fitCenter"
    android:visibility="gone" />

`

如何才能将列表视图放在正确的位置？

Answer 1

你可能将它旋转到180度，这导致向后列表

您需要旋转到360度。虽然这会导致更多的“旋转”，但您可以通过以下方式伪造：

将列表旋转至90 度。当列表旋转90度时，我们无法看到它，您可以用新的列表替换列表。然后在AnimationListener.onAnimationEnd()中，您只需再将动画列表设置为从270到360 ：

Rotate3dAnimation rotation = new Rotate3dAnimation(270, 360, centerX, centerY, 60.0f, false);

没有听完它的结尾。

完整onAnimationEnd：

public void onAnimationEnd(Animation animation) {       
    // RENDER YOUR NEW LIST HERE

    final float centerX = mContainer.getWidth() / 2.0f;
       final float centerY = mContainer.getHeight() / 2.0f;

       Rotate3dAnimation rotation = new Rotate3dAnimation(270, 360, centerX, centerY, 60.0f, false);

    rotation.setDuration(500);
    rotation.setFillAfter(true);
    rotation.setInterpolator(new AccelerateInterpolator());
    mContainer.startAnimation(rotation);
}

如何在android 3d转换中使用列表视图代替图像视图

1 个答案: