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这是我的问题。我有一个 LinearLayout,它的 onTouch 事件具有 clickable=true ,因此当触摸 LinearLayout 时,它会向上滑动屏幕。这可行,但之后当从新位置触发 onTouch 事件时,什么也没有发生。

脚步:

  1. 我触摸了 LinearLayout,它按原样向上移动。
  2. 我再次触摸它,没有任何反应
  3. 我触摸了 LinearLayout 最初所在的屏幕部分,LinearLayout 将按应有的方式切换。

看起来好像视图已移动到新位置,但实际上并没有。

下面是我的 xml 和代码。

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:id="@+id/julyContainer"
              android:orientation="vertical"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent">


        <RelativeLayout android:id="@+id/rel01"/> 
        <ImageView />
        </RelativeLayout>

        <ImageView             
            android:id="@+id/shadow"
            android:paddingTop="6dip"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/header_barshadow"/>

<ScrollView 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:background="@drawable/bg_calendar" 
    android:id="@+id/calScroller">


<RelativeLayout 
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">        

        <LinearLayout android:id="@+id/circleLayout"
                android:orientation="horizontal"
                android:clickable="true"
                android:onClick="@string/circleAction"              
                android:paddingTop="10dip"
                android:paddingLeft="10dip"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <Button 
                android:id="@+id/circleCal"
                android:background="@drawable/cal_circle_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="@string/circleAction"/>

                <LinearLayout 
                android:id="@+id/circleLayout01"
                android:orientation="vertical"        
            android:paddingLeft="10dip"
            android:paddingRight="3dip"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <TextView/>  
                <TextView/>  
                <TextView/>  

               <LinearLayout android:id="@+id/julylayout2"
                    android:layout_width="match_parent"
                    android:layout_height="0dp"
                    android:orientation="vertical">

              <TextView/>

               </LinearLayout>

            </LinearLayout>
        </LinearLayout>

       <ImageView android:id="@+id/etch1"
                  android:src="@drawable/etch_calendar"
                  android:paddingTop="15dip"
                  android:paddingBottom="15dip"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_below="@id/circleLayout"/>                     

      <LinearLayout android:id="@+id/squareLayout"
                android:clickable="true"
                android:onClick="@string/squareAction"              
                android:orientation="horizontal"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:paddingLeft="10dip"
                android:layout_below="@id/etch1">
        <Button 
                android:id="@+id/squareCal"
                android:background="@drawable/cal_square_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="@string/squareAction"/>

                <LinearLayout
            android:orientation="vertical"
            android:paddingLeft="10dip"
            android:paddingRight="3dip"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

                <TextView/>  
                <TextView/>  
                <TextView/> 

               <LinearLayout android:id="@+id/layout3"
                    android:layout_width="match_parent"
                    android:layout_height="0dp"
                    android:orientation="vertical">

                    <TextView/>  

               </LinearLayout>
        </LinearLayout>        
    </LinearLayout>        

</RelativeLayout>
</ScrollView>      
</LinearLayout>  

代码:

private void slideUp(View view) {
    Animation slide = new TranslateAnimation(
            Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
            0.0f, Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, -0.25f);
    slide.setDuration(1000);
    slide.setFillAfter(true);
    slide.setFillEnabled(true);

    view.startAnimation(slide);
}

private void slideDown(View view) {
    Animation slide = new TranslateAnimation(
            Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
            0.0f, Animation.RELATIVE_TO_SELF, -0.25f, Animation.RELATIVE_TO_SELF, 0.0f);
    slide.setDuration(1000);
    slide.setFillAfter(true);
    slide.setFillEnabled(true);
    view.startAnimation(slide);
}

新变化:新职位的输出

07-05 13:20:22.084: I/System.out(15187): onAnimationStart 0 , 120

07-05 13:20:23.053: I/System.out(15187): onAnimationEnd 0 , 120

private void slideUp(final View view) {

        Animation slide = new TranslateAnimation(
                Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
                0.0f, Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, -0.75f);
        slide.setDuration(1000);
        slide.setFillAfter(true);
        slide.setFillEnabled(true);
        view.startAnimation(slide);
        slide.setAnimationListener(new AnimationListener() {

            @Override
            public void onAnimationStart(Animation animation) {
                int[] startPosition = new int[2];
                view.getLocationOnScreen(startPosition);
                System.out.println("onAnimationStart " + startPosition[0] + " , " + startPosition[1]);
            }

            @Override
            public void onAnimationRepeat(Animation animation) {
            }

            @Override
            public void onAnimationEnd(Animation animation) {
                final int left = view.getLeft();
                final int top = view.getTop();
                final int right = view.getRight();
                final int bottom = view.getBottom();

                int offset = (int) 0.75;
                view.layout(left, top + offset * top, right, bottom + offset * bottom);

                int[] endPosition = new int[2];
                view.getLocationOnScreen(endPosition);
                System.out.println("onAnimationEnd " + endPosition[0] + " , " + endPosition[1]);

            }

        });


    }
4

1 回答 1

2

这是 android 动画的正常行为。这是因为动画并没有真正移动布局,所以它在显示器上的位置保持不变。如果要将布局重新定位到动画结束的位置,则需要调用yourLayout.layout()方法并在那里传递 4 个参数,这些参数描述了布局的新位置。请记住,layout()获取参数相对于它的父级。

请参阅下面的示例代码

private AnimationListener slideDownAnimationListener = new AnimationListener() {
        @Override
        public void onAnimationStart(Animation animation) {
        }

        @Override
        public void onAnimationRepeat(Animation animation) {
        }

        @Override
        public void onAnimationEnd(Animation animation) {
            final int left = view.getLeft();
            final int top = view.getTop();
            final int right = view.getRight();
            final int bottom = view.getBottom();
            view.layout(left, top - 0.25 * top, right, bottom - 0.25 * bottom);
        }
};

private Animation slideDownAnimation = new TranslateAnimation(
                                     Animation.RELATIVE_TO_SELF, 0.0f,
                                     Animation.RELATIVE_TO_SELF, 0.0f,
                                     Animation.RELATIVE_TO_SELF, -0.25f,
                                     Animation.RELATIVE_TO_SELF, 0.0f
                                     );

private void slideDown(final View view) {
    slide.setDuration(1000);
    slide.setFillAfter(true);
    slide.setFillEnabled(true);
    slide.setAnimationListener(slideDownAnimationListener);
    view.startAnimation(slideDownAnimation);
}
于 2012-07-05T08:19:58.390 回答