android图像视图缩放动画
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android image view scale animation
提问by Luke Batley
hi im wanting to know how to scale animate a logo and move its position?
嗨，我想知道如何缩放徽标动画并移动其位置？
i have an if statement that runs some checks and then when its done i want it to scale down an image view (logo) and move it up.
我有一个 if 语句，它运行一些检查，然后当它完成时，我希望它缩小图像视图（徽标）并将其向上移动。
heres my layout
这是我的布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@drawable/bg_default" >
<ImageView
android:id="@+id/su_logo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="34dp"
android:src="@drawable/su_logo"
android:contentDescription="@string/cd_su_logo"/>
<ImageView
android:id="@+id/su_shirts"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:src="@drawable/su_shirts"
android:contentDescription="@string/cd_su_shirts" />
</RelativeLayout>
heres my java
这是我的 java
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_initialsetup);
preChecks();
}
public void preChecks(){
//check for internet connection
//check version
String curVersion = getResources().getString(R.string.app_versionCode);
int curVer = Integer.parseInt(curVersion);
String LiveVersion = "100";
int liveVer = Integer.parseInt(LiveVersion);
if(curVer < liveVer) Log.v("setup", "There is a new version");
else {
//scale animation
}
}
回答by vasart
You can do that by applying ScaleAnimationand TranslateAnimationtogether in AnimationSet
你可以通过申请ScaleAnimation和一TranslateAnimation起来做到这一点AnimationSet
// Scaling
Animation scale = new ScaleAnimation(fromXscale, toXscale, fromYscale, toYscale, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
// 1 second duration
scale.setDuration(1000);
// Moving up
Animation slideUp = new TranslateAnimation(fromX, toX, fromY, toY);
// 1 second duration
slideUp.setDuration(1000);
// Animation set to join both scaling and moving
AnimationSet animSet = new AnimationSet(true);
animSet.setFillEnabled(true);
animSet.addAnimation(scale);
animSet.addAnimation(slideUp);
// Launching animation set
logo.startAnimation(animSet);
