ObjectAnimator property animation application demo, objectanimatordemo

ObjectAnimator property animation application demo, objectanimatordemo

Thanks to MOOC-eclipse_xu

Layout file: activity_main.xml

1 <FrameLayout xmlns: android = "http://schemas.android.com/apk/res/android" 2 xmlns: tools = "http://schemas.android.com/tools" 3 android: layout_width = "match_parent" 4 android: layout_height = "match_parent" 5 tools: context = "com. example. animationapp. mainActivity "> 6 7 <ImageView 8 android: id =" @ + id/im0 "9 android: layout_width =" wrap_content "10 android: layout_height =" wrap_content "11 android: paddingLeft = "3dp" 12 android: paddingTop = "3dp" 13 android: src = "@ drawable/B"/> 14 15 <ImageView16 android: id = "@ + id/im1" 17 android: layout_width = "wrap_content" 18 android: layout_height = "wrap_content" 19 android: paddingLeft = "3dp" 20 android: paddingTop = "3dp" 21 android: src = "@ drawable/c"/> 22 23 <ImageView24 android: id = "@ + id/im2" 25 android: layout_width = "wrap_content" 26 android: layout_height = "wrap_content" 27 android: paddingLeft = "3dp" 28 android: paddingTop = "3dp" 29 android: src = "@ drawable/d"/> 30 31 <ImageView32 android: id = "@ + id/im3" 33 android: layout_width = "wrap_content" 34 android: layout_height = "wrap_content" 35 android: paddingLeft = "3dp" 36 android: paddingTop = "3dp" 37 android: src = "@ drawable/e"/> 38 39 <ImageView40 android: id = "@ + id/im4" 41 android: layout_width = "wrap_content" 42 android: layout_height = "wrap_content" 43 android: paddingLeft = "3dp" 44 android: paddingTop = "3dp" 45 android: src = "@ drawable/f"/> 46 47 <ImageView48 android: id = "@ + id/im5" 49 android: layout_width = "wrap_content" 50 android: layout_height = "wrap_content" 51 android: paddingLeft = "3dp" 52 android: paddingTop = "3dp" 53 android: src = "@ drawable/g"/> 54 55 <ImageView56 android: id = "@ + id/im6" 57 android: layout_width = "wrap_content" 58 android: layout_height = "wrap_content" 59 android: paddingLeft = "3dp" 60 android: paddingTop = "3dp" 61 android: src = "@ drawable/h"/> 62 63 <ImageView64 android: id = "@ + id/im7" 65 android: layout_width = "wrap_content" 66 android: layout_height = "wrap_content" 67 android: src = "@ drawable/a"/> 68 69 </FrameLayout>View Code

Image Resources

MainActivity. java

1 package com. example. animationapp; 2 3 import java. util. arrayList; 4 import java. util. list; 5 6 import android. support. v7.app. actionBarActivity; 7 import android. animation. objectAnimator; 8 import android. OS. bundle; 9 import android. view. menu; 10 import android. view. menuItem; 11 import android. view. view; 12 import android. view. view. onClickListener; 13 import android. view. animation. bounceInterpolator; 14 import android. widget. imageView; 15 import android. widget. toast; 16 17 public class MainActivity extends ActionBarActivity implements OnClickListener {18 19 private int [] res = {R. id. im0, R. id. im1, R. id. im2, 20 R. id. im3, R. id. im4, R. id. im5, R. id. im6, R. id. im7}; 21 22 private List <ImageView> list = new ArrayList <ImageView> (); 23 24 private boolean flag = true; 25 26 @ Override27 protected void onCreate (Bundle savedInstanceState) {28 super. onCreate (savedInstanceState); 29 setContentView (R. layout. activity_main); 30 31 initView (); 32} 33 34 private void initView () {35 36 for (int I = 0; I <res. length; I ++) {37 ImageView im = (ImageView) findViewById (res [I]); 38 im. setOnClickListener (this); 39 list. add (im); 40} 41} 42 43 @ Override44 public void onClick (View v) {45 switch (v. getId () {46 // The Last layout of im7, superimposed on the top 47 case R. id. im7: {48 49 if (flag) {50 startAnimation (); 51 flag = false; 52} else {53 closeAnimation (); 54 flag = true; 55} 56 break; 57} 58 59 default: 60 Toast. makeText (MainActivity. this, v. getId () + "OK", Toast. LENGTH_SHORT ). show (); 61 break; 62} 63} 64 65 private void closeAnimation () {66 for (int I = 0; I <res. length-1; I ++) {67 ObjectAnimator oa = ObjectAnimator. ofFloat (list. get (I), 68 "translationY", I * 200F, 0F); 69 oa. setDuration (100); 70 // oa. setStartDelay (50 * I); 71 oa. start (); 72} 73} 74 75 private void startAnimation () {76 // only seven other icons need to be displayed here, im7 does not move 77 for (int I = 0; I <res. length-1; I ++) {78 // attribute animation operation class 79 ObjectAnimator oa = ObjectAnimator. ofFloat (list. get (I), 80 "translationY", 0F, I * 200F); 81 oa. setDuration (200); 82 // oa. setInterpolator (new BounceInterpolator (); 83 // oa. setstartdelay( 200 * I); 84 oa. start (); 85} 86} 87 88}View Code