Android实现点赞动画（27）

本文实例为大家分享了Android使用入门第二十七篇点赞动画的具体代码，供大家参考，具体内容如下

MainActivity.java代码:

package siso.likeanimation;

import android.graphics.Bitmap;
import android.graphics.PointF;
import android.graphics.drawable.BitmapDrawable;
import android.support.v4.content.res.ResourcesCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {
 private DivergeViewSecond mDivergeView;
 private Button mBtnStart;
 private ImageView mImageView;
 private ArrayList mList;
 private int mIndex = 0;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 mBtnStart = (Button)findViewById(R.id.btnStart);
 mImageView = (ImageView)findViewById(R.id.iv_start);
 mList = new ArrayList<>();
 mList.add(((BitmapDrawable) ResourcesCompat.getDrawable(getResources(), R.drawable.ic_praise_sm1, null)).getBitmap());
 mList.add(((BitmapDrawable) ResourcesCompat.getDrawable(getResources(),R.drawable.ic_praise_sm2,null)).getBitmap());
 mList.add(((BitmapDrawable) ResourcesCompat.getDrawable(getResources(),R.drawable.ic_praise_sm3,null)).getBitmap());
 mList.add(((BitmapDrawable) ResourcesCompat.getDrawable(getResources(),R.drawable.ic_praise_sm4,null)).getBitmap());
 mList.add(((BitmapDrawable) ResourcesCompat.getDrawable(getResources(),R.drawable.ic_praise_sm5,null)).getBitmap());
 mList.add(((BitmapDrawable) ResourcesCompat.getDrawable(getResources(), R.drawable.ic_praise_sm6, null)).getBitmap());
 mBtnStart.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
  if(mIndex == 5){
   mIndex = 0 ;
  }
  mDivergeView.startDiverges(mIndex);
  mIndex ++;
//  if (mDivergeView.isRunning()) {
//   mDivergeView.stop();
//  } else {
//
//  }
  }
 });
 mDivergeView = (DivergeViewSecond) findViewById(R.id.divergeView);
 mDivergeView.post(new Runnable() {
  @Override
  public void run() {
  mDivergeView.setEndPoint(new PointF(mDivergeView.getMeasuredWidth()/2,0));
  mDivergeView.setDivergeViewProvider(new Provider());
  }
 });
// mDivergeView.start();
 }

 @Override
 protected void onDestroy() {
 super.onDestroy();
 if(mList != null){
  mList.clear();
  mList = null;
 }

 }

 class Provider implements DivergeViewSecond.DivergeViewProvider{

 @Override
 public Bitmap getBitmap(Object obj) {
  return mList == null ? null : mList.get((int)obj);
 }
 }
}

DivergeViewSecond.java代码:

package siso.likeanimation;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PointF;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;
import java.util.concurrent.CopyOnWriteArrayList;


public class DivergeViewSecond extends View implements Runnable{

 public static final float mDuration = 0.010F;
 public static final int mDefaultHeight = 100;
 protected static final long mQueenDuration = 200;

 protected final Random mRandom = new Random();

 protected ArrayList mDivergeInfos;

 protected List