Android 以编程方式更新视图和切换视图时,ViewSwitcher不显示初始视图
下面是我正在试验的一个概念的测试项目。其目的是动态创建两个视图并从一个视图滑动到另一个视图 但是,ViewSwitcher从不显示初始视图 活动 布局XML 动画:在\u right.xml中滑动\u 动画:slide_out_left.xml 对于图片,我只使用了谷歌的鱼图片和火图片 问题:鱼的图像永远不可见:- 取而代之的是,视图为白色,火灾图像滑入。鱼从不溜出去Android 以编程方式更新视图和切换视图时,ViewSwitcher不显示初始视图,android,Android,下面是我正在试验的一个概念的测试项目。其目的是动态创建两个视图并从一个视图滑动到另一个视图 但是,ViewSwitcher从不显示初始视图 活动 布局XML 动画:在\u right.xml中滑动\u 动画:slide_out_left.xml 对于图片,我只使用了谷歌的鱼图片和火图片 问题:鱼的图像永远不可见:- 取而代之的是,视图为白色,火灾图像滑入。鱼从不溜出去 我该怎么做才能让鱼滑出呢?我已经弄明白了-解决办法是给观赏时间!别着急,哈哈! 下面是更新的mButton.setOnClick
我该怎么做才能让鱼滑出呢?我已经弄明白了-解决办法是给观赏时间!别着急,哈哈! 下面是更新的mButton.setOnClickListener的代码
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ViewSwitcher;
public class MainActivity extends Activity {
private ViewSwitcher mViewSwitcher;
private Button mButton;
private Animation mAnimSlideInRight;
private Animation mAnimSlideOutLeft;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mViewSwitcher = (ViewSwitcher) findViewById(R.id.viewSwitcher1);
mButton = (Button) findViewById(R.id.button1);
mAnimSlideInRight = AnimationUtils.loadAnimation(this, R.anim.slide_in_right);
mAnimSlideOutLeft = AnimationUtils.loadAnimation(this, R.anim.slide_out_left);
// Fish image
final ImageView imageView1 = new ImageView(MainActivity.this);
imageView1.setImageResource(R.drawable.fish_one);
imageView1.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
// Fire image
final ImageView imageView2 = new ImageView(MainActivity.this);
imageView2.setImageResource(R.drawable.fire);
imageView2.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
mButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mViewSwitcher.removeAllViews();
mViewSwitcher.addView(imageView1, 0);
mViewSwitcher.addView(imageView2, 1);
mViewSwitcher.setInAnimation(mAnimSlideInRight);
mViewSwitcher.setOutAnimation(mAnimSlideOutLeft);
mViewSwitcher.showNext();
}
});
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="${relativePackage}.${activityClass}" >
<Button
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Flip" />
<ViewSwitcher
android:id="@+id/viewSwitcher1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ViewSwitcher>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="100%" android:toXDelta="0%"
android:duration="@android:integer/config_mediumAnimTime"/>
<alpha android:fromAlpha="1.0" android:toAlpha="1.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0%" android:toXDelta="-100%"
android:duration="@android:integer/config_mediumAnimTime"/>
<alpha android:fromAlpha="1.0" android:toAlpha="1.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
mButton.setOnClickListener(new OnClickListener()
{
// Button callback
@Override
public void onClick(View v)
{
mViewSwitcher.post(new Runnable()
{
// Runnable that removes all views and places the images in the view
@Override
public void run()
{
mViewSwitcher.removeAllViews();
mViewSwitcher.addView(imageView1, 0);
mViewSwitcher.addView(imageView2, 1);
// Nested Runnable that triggers the sliding animation
mViewSwitcher.post(new Runnable()
{
@Override
public void run()
{
mViewSwitcher.setInAnimation(mAnimSlideInRight);
mViewSwitcher.setOutAnimation(mAnimSlideOutLeft);
mViewSwitcher.showNext();
}
});// end of nested Runnable
}
});// end of Runnable
}
});// end of OnClickListener