如何设置＆QUOT; toXDelta＆QUOT;翻译从Java code动画的价值？ [英] How can I set "toXDelta" translate animation value from java code?
问题描述
我怎么可以设置从Java code toXDelta价值？我需要先计算它，所以我不能只在XML中使用的最终值。我可以用动画（）。translateX对我的看法，但我就不能让动画减慢，直到最后..任何想法？
how can I set toXDelta value from java code? I need to calculate it first so I can't just use final value in xml. I could use animate().translateX on my view but then I can't make animation slowing down till the end.. any ideas?
推荐答案
您可以使用 Viewfiliper 方法。 Refrence是：<一href=\"https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwjGiYq5scLJAhUEYg8KHdBnAOIQFggpMAE&url=http%3A%2F%2Fdeveloper.android.com%2Freference%2Fandroid%2Fwidget%2FViewFlipper.html&usg=AFQjCNFul8SdYdyMNKlvzLqfN4_-fqfhgg\"相对=nofollow> ViewFlipper | Android开发者
You can use Viewfiliper Method. Refrence is : ViewFlipper | Android Developers
有是在这样的一个例子。（<一href=\"http://examples.java$c$cgeeks.com/android/core/widget/viewflipper/android-viewflipper-example/\"相对=nofollow> Android的ViewFlipper例）
There is an example in this.(Android ViewFlipper Example)
和你做一个动画俗在code（请参阅 RES /阿尼姆文件夹）
And you make a custum animation in your code(See res/anim Folder)
这是例子code：
该MainActivity.java code：
The MainActivity.java code:
package com.javacodegeeks.android.viewflipperapp;
import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.widget.ViewFlipper;
public class MainActivity extends Activity {
private ViewFlipper viewFlipper;
private float lastX;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewFlipper = (ViewFlipper) findViewById(R.id.viewflipper);
}
// Using the following method, we will handle all screen swaps.
public boolean onTouchEvent(MotionEvent touchevent) {
switch (touchevent.getAction()) {
case MotionEvent.ACTION_DOWN:
lastX = touchevent.getX();
break;
case MotionEvent.ACTION_UP:
float currentX = touchevent.getX();
// Handling left to right screen swap.
if (lastX < currentX) {
// If there aren't any other children, just break.
if (viewFlipper.getDisplayedChild() == 0)
break;
// Next screen comes in from left.
viewFlipper.setInAnimation(this, R.anim.slide_in_from_left);
// Current screen goes out from right.
viewFlipper.setOutAnimation(this, R.anim.slide_out_to_right);
// Display next screen.
viewFlipper.showNext();
}
// Handling right to left screen swap.
if (lastX > currentX) {
// If there is a child (to the left), kust break.
if (viewFlipper.getDisplayedChild() == 1)
break;
// Next screen comes in from right.
viewFlipper.setInAnimation(this, R.anim.slide_in_from_right);
// Current screen goes out from left.
viewFlipper.setOutAnimation(this, R.anim.slide_out_to_left);
// Display previous screen.
viewFlipper.showPrevious();
}
break;
}
return false;
}
}
XML文件：
<?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="fill_parent"
android:orientation="vertical"
android:background="#f5f5f5" >
<ViewFlipper
android:id="@+id/viewflipper"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_margin="6dp" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:text="Windows PC"
android:textColor="#b7102f"
android:textSize="25dp">
</TextView>
<ImageView
android:layout_marginTop="15dp"
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/windows_pc" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:layout_marginTop="15dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ubuntu PC"
android:textColor="#191975"
android:textSize="25dp"
android:textStyle="italic" >
</TextView>
<ImageView
android:layout_marginTop="15dp"
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ubuntu_pc" />
</LinearLayout>
</ViewFlipper>
</LinearLayout>
所有娄code是到 RES /阿尼姆目录：
slide_in_from_left.xml（见到屏幕）：
slide_in_from_left.xml (see into the screen):
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="-100%"
android:toXDelta="0%"
android:fromYDelta="0%"
android:toYDelta="0%"
android:duration="1500" />
</set>
slide_out_to_left.xml（见出画面）：
slide_out_to_left.xml (see out of screen):
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="0%"
android:toXDelta="-100%"
android:fromYDelta="0%"
android:toYDelta="0%"
android:duration="1500"/>
</set>
slide_in_from_right.xml（见到屏幕）：
slide_in_from_right.xml (see into the screen):
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="100%"
android:toXDelta="0%"
android:fromYDelta="0%"
android:toYDelta="0%"
android:duration="1500" />
</set>
slide_out_to_right.xml（见出画面）：
slide_out_to_right.xml (see out of screen):
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="0%"
android:toXDelta="100%"
android:fromYDelta="0%"
android:toYDelta="0%"
android:duration="1500"/>
</set>
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