使用以下代码,我将一个片段替换为另一个片段:
FragmentTransaction ft = getFragmentManager().beginTransaction();
if(anomalieFragment == null)
{
ft.setCustomAnimations(R.animator.slide_out_right, R.animator.slide_in_left, R.animator.slide_out_right, R.animator.slide_in_left);
anomalieFragment = new AnomalieListFragment();
ft.replace(R.id.content, anomalieFragment);
ft.addToBackStack(null);
}
slide_in_left
和slide_out_right
的定义如下
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<objectAnimator
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500"
android:propertyName="XFraction"
android:valueFrom="0"
android:valueTo="100"
android:valueType="floatType" />
</set>
和
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<objectAnimator
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500"
android:propertyName="XFraction"
android:valueFrom="100"
android:valueTo="0"
android:valueType="floatType" />
</set>
一旦完成转换,一切都很好,没有叠加,但是当转换处于运行状态时,旧片段在新片段下仍然可见。
正在进行的转型 - 1 正在进行的过渡 - 2
我能做些什么来避免这种情况吗?
修改
这是XFraction的实现(我创建了一个FrameLayout派生类:
SlidingFrameLayout
package com.aquadata.tutorials.FirstApp.view;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.FrameLayout;
import com.aquadata.fms.R;
import com.google.android.gms.internal.x;
/**
* Created by igirouard on 2014-08-27.
* FrameLayout supportant d'être slidé in an out par le R.animator.slide_in_left et slide_out_right
* Supporte aussi que son enfant contienne une vue id/shadow pour afficher un ombrage quand
*/
public class SlidingFrameLayout extends FrameLayout
{
//Position initiale du layout, telle que définie dans OnLayout
float initialX = -1;
//Dernière fraction
float _xFraction = -1;
public SlidingFrameLayout(Context context)
{
super(context);
}
public SlidingFrameLayout(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public SlidingFrameLayout(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
}
//Retourne la fraction de la position initiale par rapport à la position lors du slide
private float getXFraction()
{
return getWidth() == 0 ? 0 :(getX() - initialX) / getWidth() * 100;
}
//Déterminer un nouveau x selon la fraction de déplacement domandée
public void setXFraction(float xFraction)
{
_xFraction = xFraction;
if(initialX != -1.0f && getWidth() != 0)
{
final float newX = initialX + (xFraction / 100 * getWidth());
setX(newX);
}
}
/**
* Called from layout when this view should
* assign a size and position to each of its children.
*
* Derived classes with children should override
* this method and call layout on each of
* their children.
* @param changed This is a new size or position for this view
* @param left Left position, relative to parent
* @param top Top position, relative to parent
* @param right Right position, relative to parent
* @param bottom Bottom position, relative to parent
*
* Si une ombre a été ajoutée au layout, la cacher si on est à x == 0
*/
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom)
{
if(changed)
initialX = left;
super.onLayout(changed, left,top,right,bottom);
if(_xFraction != -1)
setXFraction(_xFraction);
}
}
答案 0 :(得分:0)
我通过设置背景颜色修复了这个类似的问题:
android:background="@color/background_material_light"