android - LayoutTransition:展开 View 旁边的Animate View

我把我的问题重新描述成一个非常简单的表示。我有3个文本视图。其中2个位于单独的LinearLayout中，第三个与LinearLayout位于同一级别。
我正在切换test1和test2的可见性，我希望看到它们逐渐消失（这是有效的）。此外，我希望test3能进入他的新位置（取代test1和test2）。我不能让这发生。test3只是捕捉到它的新点。
我怎么能做到这一点？
我的代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/parent"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:animateLayoutChanges="true"
    android:orientation="vertical" >

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Click" />

    <LinearLayout android:animateLayoutChanges="true"
        android:id="@+id/child1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/test1"
            android:layout_width="match_parent" android:visibility="gone"
            android:layout_height="wrap_content"
            android:text="TEST1" />

        <TextView
            android:id="@+id/test2"
            android:layout_width="match_parent" android:visibility="gone"
            android:layout_height="wrap_content"
            android:text="TEST2" />
    </LinearLayout>

    <TextView
        android:id="@+id/test3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="TEST3" />

</LinearLayout>

在我的活动中：

public class LayoutAnimations extends Activity {
    private boolean toggle = true;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_animations);

        Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                if (toggle) {
                    findViewById(R.id.test1).setVisibility(View.VISIBLE);
                    findViewById(R.id.test2).setVisibility(View.VISIBLE);
                } else {
                    findViewById(R.id.test1).setVisibility(View.GONE);
                    findViewById(R.id.test2).setVisibility(View.GONE);
                }
                toggle = !toggle;
            }
        });

    }

}

编辑：实际上，我在TextView和test1旁边还有一个test2应该随时可见，所以我不能只隐藏LinearLayout本身。

最佳答案

我用另一个问题解决了。See this answer
引用：
我认为最简单的方法是扩展Animation类并重写applyTransformation()来更改视图的高度，如下所示：

import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.view.animation.Animation;
import android.view.animation.Transformation;
import android.widget.LinearLayout;

public class MyCustomAnimation extends Animation {

    public final static int COLLAPSE = 1;
    public final static int EXPAND = 0;

    private View mView;
    private int mEndHeight;
    private int mType;
    private LinearLayout.LayoutParams mLayoutParams;

    public MyCustomAnimation(View view, int duration, int type) {

        setDuration(duration);
        mView = view;
        mEndHeight = mView.getHeight();
        mLayoutParams = ((LinearLayout.LayoutParams) view.getLayoutParams());
        mType = type;
        if(mType == EXPAND) {
            mLayoutParams.height = 0;
        } else {
            mLayoutParams.height = LayoutParams.WRAP_CONTENT;
        }
        view.setVisibility(View.VISIBLE);
    }

    public int getHeight(){
        return mView.getHeight();
    }

    public void setHeight(int height){
        mEndHeight = height;
    }

    @Override
    protected void applyTransformation(float interpolatedTime, Transformation t) {

        super.applyTransformation(interpolatedTime, t);
        if (interpolatedTime < 1.0f) {
            if(mType == EXPAND) {
                mLayoutParams.height =  (int)(mEndHeight * interpolatedTime);
            } else {
                mLayoutParams.height = (int) (mEndHeight * (1 - interpolatedTime));
            }
            mView.requestLayout();
        } else {
            if(mType == EXPAND) {
                mLayoutParams.height = LayoutParams.WRAP_CONTENT;
                mView.requestLayout();
            }else{
                mView.setVisibility(View.GONE);
            }
        }
    }
}

要使用它，请按如下方式设置onclick()：

int height;

@Override
public void onClick(View v) {
    if(view2.getVisibility() == View.VISIBLE){
        MyCustomAnimation a = new MyCustomAnimation(view2, 1000, MyAnimation.COLLAPSE);
        height = a.getHeight();
        view2.startAnimation(a);
    }else{
        MyCustomAnimation a = new MyCustomAnimation(view2, 1000, MyAnimation.EXPAND);
        a.setHeight(height);
        view2.startAnimation(a);
    }
}

当做。