我在 android 中创建了一个视图,我需要从下到上对其进行动画处理,反之亦然。我已经使用 TranslateAnimation 成功地做到了这一点。但问题是我在视图上有几个按钮。当动画时,触摸点保持在原始位置并且不会移动到新位置。因此,当我再次单击按钮的原始位置时,从上到下的动画会运行,但该按钮不存在。
我搜索了互联网,人们说用参数调用 view.layout,但我的问题是如何获取视图的最新位置,因为我试图获取动画开始和动画结束的位置并且它保持不变。
另外,请不要给出它实际上不会移动视图的答案,它会创建副本并移动它等等,因为我已经搜索过但找不到描述或实施的正确解决方案。
这是代码:
import android.content.Context;
import android.graphics.Matrix;
import android.view.LayoutInflater;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.Transformation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import com.Card_Android.R;
public class GameMenuScreenAnimated extends LinearLayout {
private final View mainView;
public GameMenuScreenAnimated(Context context,
final GameViewController dashboardVC) {
super(context);
LayoutInflater inflater = LayoutInflater.from(context);
mainView = inflater.inflate(R.layout.main_menu, this);
ImageButton btn = (ImageButton) mainView.findViewById(R.id.trade);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
System.out.println("yaaaaaay!!!!");
}
});
slideDown(mainView);
}
public View getMainView() {
return mainView;
}
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,
0.5f);
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) {
int[] endPosition = new int[2];
view.getLocationOnScreen(endPosition);
System.out.println("onAnimationEnd " + endPosition[0] + " , "
+ endPosition[1]);
}
});
}
private final 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 = mainView.getLeft();
final int top = mainView.getTop();
final int right = mainView.getRight();
final int bottom = mainView.getBottom();
mainView.layout(left, (int) Math.round(top + 0.25 * top), right,
(int) Math.round(bottom + 0.25 * bottom));
}
};
private final Animation slideDownAnimation = 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);
private void slideDown(final View view) {
slideDownAnimation.setDuration(1000);
slideDownAnimation.setFillAfter(true);
slideDownAnimation.setFillEnabled(true);
slideDownAnimation.setAnimationListener(slideDownAnimationListener);
view.startAnimation(slideDownAnimation);
}
}
XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="bottom"
>
<LinearLayout
android:id="@+id/tableLayout1"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:gravity="center"
>
<ImageButton
android:id="@+id/trade"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_margin="0dp"
android:background="@null"
android:scaleType="centerCrop"
android:src="@drawable/upgrade_btn" />
</LinearLayout>
<LinearLayout
android:id="@+id/tableLayout1"
android:layout_width="fill_parent"
android:gravity="center"
android:layout_height="wrap_content"
>
<ImageButton
android:id="@+id/evolution"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:background="@null"
android:scaleType="centerCrop"
android:src="@drawable/sell_btn" />
<ImageButton
android:id="@+id/trade"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:background="@null"
android:scaleType="centerCrop"
android:src="@drawable/upgrade_btn"
/>
</LinearLayout>
</LinearLayout>
可绘制的 xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/evolution">
<item android:state_pressed="true" android:drawable="@drawable/menu_off" /> <!-- pressed -->
<item android:state_focused="true" android:drawable="@drawable/menu_on" /> <!-- focused -->
<item android:drawable="@drawable/menu_on" /> <!-- default -->
</selector>
我要做的就是创建一个简单的菜单,其中包含几个按钮,单击按钮时可以滑入和滑出。