Android Open Source - Common-Library Fall Ball View

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License

The source code is released under:

Apache License

Java Source Code

package com.morgan.library.widget;
//from ww w  . j a v  a  2  s.  c o m
import android.annotation.SuppressLint;
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.BounceInterpolator;
import android.view.animation.Interpolator;
import android.widget.ImageView;

/**
 * ???????????????ImageView
 * 
 * @author Morgan.Ji
 * 
 */
public class FallBallView extends ImageView {

  private static final int ANIMATION_MOVE = 0;
  private static final int ANIMATION_END = -1;
  private static final int DIVID_COUNT = 100;
  private static final int TRANSLATE_TIME = 1000;
  private int mStartX, mStartY;
  private int mEndX, mEndY;
  private Interpolator mInterpolator;
  private FallListener mOnFallListener;

  public FallBallView(Context context, AttributeSet attrs) {
    super(context, attrs);
    mInterpolator = new BounceInterpolator();
  }

  public void start() {
    if (null != mOnFallListener) {
      mOnFallListener.onfallStart();
    }
    new FallThread().start();
  }

  @SuppressLint("HandlerLeak")
  private Handler mHandler = new Handler() {
    @Override
    public void dispatchMessage(Message msg) {
      if (msg.what == ANIMATION_MOVE) {
        // FallBallWidget.this.setTranslationX(msg.arg1);
        // FallBallWidget.this.setTranslationY(msg.arg2);
        FallBallView.this.layout(mStartX + msg.arg1,
            mStartY + msg.arg2, mStartX + msg.arg1 + getWidth(),
            mStartY + msg.arg2 + getHeight());
      } else if (msg.what == ANIMATION_END) {
        // FallBallWidget.this.setTranslationX(0);
        // FallBallWidget.this.setTranslationY(0);
        FallBallView.this.layout(mStartX, mStartY,
            mStartX + getWidth(), mStartY + getHeight());
        FallBallView.this.setVisibility(View.INVISIBLE);
        if (null != mOnFallListener) {
          mOnFallListener.onfalled();
        }
      }
    }
  };

  class FallThread extends Thread {

    @Override
    public void run() {
      int xLength = mEndX - mStartX;
      int yLength = mEndY - mStartY;
      int start = 1;
      while (start <= DIVID_COUNT) {
        try {
          Message msg = mHandler.obtainMessage();
          msg.what = ANIMATION_MOVE;
          msg.arg1 = (int) (xLength * ((double) start / DIVID_COUNT));
          msg.arg2 = (int) (yLength * mInterpolator
              .getInterpolation((float) ((double) start / DIVID_COUNT)));
          mHandler.sendMessage(msg);
          Thread.sleep(TRANSLATE_TIME / DIVID_COUNT);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
        start++;
      }
      mHandler.sendEmptyMessage(ANIMATION_END);
    }
  }

  public void setStartX(int mStartX) {
    this.mStartX = mStartX;
  }

  public void setStartY(int mStartY) {
    this.mStartY = mStartY;
  }

  public void setEndX(int mEndX) {
    this.mEndX = mEndX;
  }

  public void setEndY(int mEndY) {
    this.mEndY = mEndY;
  }

  public void setOnFallListener(FallListener mOnFallListener) {
    this.mOnFallListener = mOnFallListener;
  }

  public interface FallListener {

    public void onfallStart();

    public void onfalled();
  }
}

Java Source Code List

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