Android翻译动画：移动的视图重叠

Question

I have two TextViews in my Activity (let's call them TV1 and TV2), both belonging to different RelativeLayouts . I created a TranslateAnimation to move TV1 from its location to TV2's location. The problem is that, when TV1 reaches TV2's RelativeLayout , it gets under it (the moved TextView is overlapped by TV2's layout), and I want TV1 to be above this layout. Is there any way to bring it to front?

Thanks!

[EDIT]

I add my layout code. I want to move timeText to numTimeValue . As you can see, timeText is declared after numTimeValue. Also, I tried this:

mTimeTextView.bringToFront();
((View)mTimeTextView.getParent()).bringToFront();

and it's still overlapped.

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/outer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/header"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:baselineAligned="false"
        android:orientation="vertical" >

        <LinearLayout
            android:id="@+id/pointsLayout"
            style="@style/ScoreBar"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:baselineAligned="false"
            android:orientation="horizontal" >

            <LinearLayout
                android:id="@+id/numCorrectLayout"
                android:layout_width="0dip"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:orientation="vertical" >

                <TextView
                    android:id="@+id/numCorrectTitle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center_horizontal"
                    android:text="@string/num_correct_title"
                    android:textSize="16sp" />

                <TextView
                    android:id="@+id/numGuessed"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center_horizontal"
                    android:textSize="22sp" />
            </LinearLayout>

            <LinearLayout
                android:id="@+id/numTimeLayout"
                android:layout_width="0dip"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:orientation="vertical" >

                <TextView
                    android:id="@+id/numTimeTitle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center_horizontal"
                    android:text="@string/num_time_title"
                    android:textSize="16sp" />

                <TextView
                    android:id="@+id/numTimeValue"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center_horizontal"
                    android:textSize="22sp" />
            </LinearLayout>
        </LinearLayout>

        <RelativeLayout
            android:id="@+id/timeLayout"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <ProgressBar
                android:id="@+id/time_progbar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_marginRight="10dp"
                android:layout_toLeftOf="@+id/timeText"
                android:indeterminateDrawable="@android:drawable/progress_indeterminate_horizontal"
                android:indeterminateOnly="false"
                android:maxHeight="20dip"
                android:minHeight="20dip"
                android:padding="15dp"
                android:progressDrawable="@drawable/time_progressbar" />

            <TextView
                android:id="@+id/timeText"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:layout_marginRight="5dp"
                android:textSize="30sp" />
        </RelativeLayout>
    </LinearLayout>

    <ImageView
        android:id="@+id/movieImage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/header"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="30dp"
        android:contentDescription="@string/movie_to_guess" />
</RelativeLayout>

[EDIT2]

Simplified version:

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/game_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/pointsLayout"
        style="@style/ScoreBar"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:baselineAligned="false"
        android:orientation="horizontal" >

            <TextView
                android:id="@+id/numTimeValue"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:textSize="22sp" />
        <!--  </LinearLayout> -->
    </LinearLayout>

    <RelativeLayout
        android:id="@+id/timeLayout"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/pointsLayout"
        android:orientation="horizontal" >

        <ProgressBar
            android:id="@+id/time_progbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_marginRight="10dp"
            android:layout_toLeftOf="@+id/timeText"
            android:indeterminateDrawable="@android:drawable/progress_indeterminate_horizontal"
            android:indeterminateOnly="false"
            android:maxHeight="20dip"
            android:minHeight="20dip"
            android:padding="15dp"
            android:progressDrawable="@drawable/time_progressbar" />

        <TextView
            android:id="@+id/timeText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginRight="5dp"
            android:textSize="30sp" />
    </RelativeLayout>

    <ImageView
        android:id="@+id/movieImage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/timeLayout"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="30dp"
        android:contentDescription="@string/movie_to_guess" />
</RelativeLayout>

Answer 1

This might be related to the z-order, ie vertical stacking, of the respecive layout elements. Two solutions:

(1) Change the z-order in your java code so that the view you want to have on top is moved to the front. In your case you are going to want to move the entire relative layout that contains the TextView you want on top to the front. Moving just the text view itself will not work.

(2) Control the z-order within the xml . By default views added further down in your XML file will be higher up in the z-order. Try swaping the position of the relative layouts and see if it works.

Answer 2

Try using android:elevation in your xml.

For TV1, provide android:elevation = "1dp"

For TV2, provide android:elevation = "0dp"