Android-using Java code to implement property Animation

Android-using Java code to implement property Animation
Android-using Java code to implement property Animation

In addition to defining xml files to set animations, you can also use java code to control animations.
Example:

Layout file:

Main activity:

Package com. xieth. as. againanimdemo; import android. OS. bundle; import android. support. v7.app. appCompatActivity; import android. view. view; import android. view. animation. translateAnimation; import android. widget. imageView; import android. widget. toast; public class MainActivity2 extends AppCompatActivity {private ImageView imageView = null; @ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main2); imageView = (ImageView) findViewById (R. id. id_img);} public void click (View view) {Toast. makeText (this, "click", Toast. LENGTH_SHORT ). show ();} public void move (View view) {TranslateAnimation animation = new TranslateAnimation (0,200, 0, 0); // set the display duration of animation. setDuration (1000); imageView. startAnimation (animation );}}

Set events
Mobile

TranslateAnimation animation = new TranslateAnimation (0,200, 0, 0); // you can specify the length of time for display: animation. setDuration (1000); imageView. startAnimation (animation );

Run:

ObjectAnimator.ofFloat(imageView, "translationX", 0F, 200F).setDuration(1000).start();

Run:

You can see that the effect is the same.

Modify the Code:

  ObjectAnimator.ofFloat(imageView, "translationY", 0F, 200F).setDuration(1000).start();

This is the Y Direction:

Rotate <喎?http: www.bkjia.com kf ware vc " target="_blank" class="keylink"> Vc3ryb25np1_vcd4ncjxwcmugy2xhc3m9 "brush: java;"> ObjectAnimator.ofFloat(imageView, "rotation", 0F, 360F).setDuration(1000).start();

Run:

Composite Animation

 ObjectAnimator.ofFloat(imageView, "rotation", 0F, 360F).setDuration(1000).start();          ObjectAnimator.ofFloat(imageView, "translationX", 0F, 360F).setDuration(1000).start();          ObjectAnimator.ofFloat(imageView, "translationY", 0F, 360F).setDuration(1000).start();

Run:

The three animations are executed simultaneously.

UsePropertyValuesHolder

 PropertyValuesHolder p1 = PropertyValuesHolder.ofFloat("rotation", 0F, 360F);        PropertyValuesHolder p2 = PropertyValuesHolder.ofFloat("translationX", 0F, 200F);        PropertyValuesHolder p3 = PropertyValuesHolder.ofFloat("translationY", 0F, 200F);        ObjectAnimator.ofPropertyValuesHolder(imageView, p1, p2, p3).setDuration(1000).start();

Run:

UseAnimatorSet

ObjectAnimator a1 = ObjectAnimator.ofFloat(imageView, "rotation", 0F, 360F);ObjectAnimator a2 = ObjectAnimator.ofFloat(imageView, "translationX", 0F, 360F);ObjectAnimator a3 = ObjectAnimator.ofFloat(imageView, "translationY", 0F, 360F);AnimatorSet set = new AnimatorSet();set.setDuration(1000);set.playTogether(a1, a2, a3);set.start();

Run:

The effect is the same.

Previously, they were played by colleagues. Now they can be played in order.

set.playSequentially(a1, a2, a3);

Run:

You can see that the image is rotated first, then moved to the X direction, and then to the Y direction.

You can also perform sequential control in this way.
First, execute the movement in both the X and Y directions, and then rotate

set.play(a2).with(a3);set.play(a1).after(a2);

Run: