Android: Several common animations about animation

Add some animations appropriately to get a better user experience, this time talking about some common animations ~
Such as: Transparent animation, gradient animation and so on.

First look at the run:

Attach the code, and the comments are written in the code:

Mainactivity.java:

 PackageCom.vrinux.animotiondemo;Importandroid.app.Activity;ImportAndroid.os.Bundle;ImportAndroid.view.View;ImportAndroid.view.animation.AlphaAnimation;ImportAndroid.view.animation.Animation;ImportAndroid.view.animation.AnimationSet;ImportAndroid.view.animation.RotateAnimation;ImportAndroid.view.animation.ScaleAnimation;ImportAndroid.view.animation.TranslateAnimation;ImportAndroid.widget.ImageView; Public  class mainactivity extends Activity {    PrivateImageView imgobj;PrivateAnimation Animation;PrivateAnimationset Animationset;@Override    protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate);        Setcontentview (R.layout.activity_main);    Imgobj = (ImageView) Findviewbyid (R.id.imgid); } Public void Animationshow(View view) {Switch(View.getid ()) { CaseR.id.btn01id:/** * Transparent animation: alphaanimation (float fromalpha,//The alpha value of the starting state; float * toalpha)//The alpha value of the change-over state; */Animation =NewAlphaanimation (0.0F1.0f);//Set the duration of the animation;Animation.setduration ( the);//Add animations for components;Imgobj.setanimation (animation); Break; CaseR.id.btn02id:/** * Gradient animation: scaleanimation (float FromX,//Change start state x-axis (that is, width) is the ratio of the control's x-axis (that is, width), * 1.0f is the width of the control, 0.0f means no width , which is greater than the corresponding multiple of the width of the 1.0f identity control; float * tox,//Changes the end state x-axis (that is, the width) of the control's x-axis (that is, the width); float fromY, *//change the starting state y-axis (that is, height) of the control  The ratio of y-axis (that is, height), and fromx; float toY, *//change end state Y-axis (that is, height) is the ratio of the y-axis (i.e. height) of the control, the x-coordinate of the origin of the change of float pivotx,//; float * PIVOTY)//Change the origin y-axis coordinates; */Animation =NewScaleanimation (0.5F2.0F0.5F2.0F50.0F50.0f); Animation.setduration ( the); Imgobj.setanimation (animation); Break; CaseR.id.btn03id:/** * Displacement animation: translateanimation (float fromxdelta,//displacement start x axis position; float * Toxdelta,//Displacement end x-axis position; Flo At Fromydelta,//Displacement starting y-axis position; float * toydelta)//Displacement end y-axis position; * /Animation =NewTranslateanimation (0.0F100.0F0.0F100.0f); Animation.setduration ( the); Imgobj.setanimation (animation); Break; CaseR.id.btn04id:/** * Rotation animation: rotateanimation (float fromdegrees,//start rotation degree; float * todegrees,//end rotation degree; float PIV OtX,//x-axis coordinates of the rotation origin, float * pivoty)//y-coordinate of the rotation origin; * /Animation =NewRotateanimation (0.0F360.0F50.0F50.0f); Animation.setduration ( the); Imgobj.setanimation (animation); Break; CaseR.id.btn05id:/** * Animationset (TRUE)//animation collection (combination);Alphaanimation Animation1 =NewAlphaanimation (0.0F1.0f); Scaleanimation Animation2 =NewScaleanimation (0.5F2.0F0.5F2.0F50.0F50.0f); Translateanimation Animation3 =NewTranslateanimation (0.0F100.0F0.0F100.0f); Rotateanimation Animation4 =NewRotateanimation (0.0F360.0F50.0F50.0f); Animationset =NewAnimationset (true);            Animationset.addanimation (Animation1);            Animationset.addanimation (Animation2);            Animationset.addanimation (Animation3);            Animationset.addanimation (ANIMATION4); Animationset.setduration (4000); Imgobj.setanimation (Animationset); Break; }    }}

Activity_main.xml:

<linearlayout xmlns:android="Http://schemas.android.com/apk/res/android"Android:layout_width="Fill_parent"android:layout_height="Fill_parent"android:orientation="Vertical"> <imageview android:ID="@+id/imgid"Android:layout_width="200DP"android:layout_height="200DP"android:layout_weight="1"Android:src="@drawable/img"/> <button android:ID="@+id/btn01id"Android:layout_width="Match_parent"android:layout_height="Wrap_content"android:layout_weight="1"android:onclick="Animationshow"Android:text="Transparent animation"Android:textsize="20SP"/> <button android:ID="@+id/btn02id"Android:layout_width="Match_parent"android:layout_height="Wrap_content"android:layout_weight="1"android:onclick="Animationshow"Android:text="Gradient Animation"Android:textsize="20SP"/> <button android:ID="@+id/btn03id"Android:layout_width="Match_parent"android:layout_height="Wrap_content"android:layout_weight="1"android:onclick="Animationshow"Android:text="Displacement animation"Android:textsize="20SP"/> <button android:ID="@+id/btn04id"Android:layout_width="Match_parent"android:layout_height="Wrap_content"android:layout_weight="1"android:onclick="Animationshow"Android:text="Rotate animation"Android:textsize="20SP"/> <button android:ID="@+id/btn05id"Android:layout_width="Match_parent"android:layout_height="Wrap_content"android:layout_weight="1"android:onclick="Animationshow"Android:text="Animation Mix"Android:textsize="20SP"/></linearlayout>

Photo resources:

Img.jpg:

Android: Several common animations about animation