Android实现卫星菜单效果

前言

最近需求中，需要实现 卫星菜单的需求，最终通过自定义View和动画属性来实现，具体功能如下：

1.自定义View

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.AnimationUtils;
import android.view.animation.RotateAnimation;
import android.view.animation.TranslateAnimation;
import com.xinrui.headsettest.R;

public class SatelliteView extends ViewGroup {
  private View mBtnView;
  private MenuStatus mBStatus = MenuStatus.STATUS_CLOSE;
  private onSubItemClickListener onListener;

  public enum MenuStatus {
    STATUS_OPEN, STATUS_CLOSE
  }

  //子菜单点击接口
  public interface onSubItemClickListener {
    void onItemClick(View view, int position);
  }

  public void setonSubItemClickListener(onSubItemClickListener mListener) {
    this.onListener = mListener;
  }

  public SatelliteView(Context context) {
    super(context);
//    this(context, null);
  }

  public SatelliteView(Context context, AttributeSet attrs) {
    super(context, attrs);
//    this(context, attrs, 0);
  }

  public SatelliteView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
  }

  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int count = getChildCount();
    for (int i = 0; i < count; i++) {
      measureChild(getChildAt(i), widthMeasureSpec, heightMeasureSpec);
    }
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
  }

  //添加布局，就是所要显示的控件View
  @Override
  protected void onLayout(boolean changed, int l, int t, int r, int b) {
    if (changed) {
      //主菜单按钮
      onMainButton();
      //子菜单按钮
      onSubItemButton();
    }
  }

  //获取主菜单按钮
  private void onMainButton() {
    mBtnView = getChildAt(0);
    mBtnView.setonClickListener(new onClickListener() {
      @Override
      public void onClick(View v) {
 //主菜单动画旋转动画
 Animation rotateAnim = AnimationUtils.loadAnimation(getContext(), R.anim.satellite_anim);
 mBtnView.startAnimation(rotateAnim);
 //子菜单动画
 subItemAnim();
      }
    });
    int l, t, r = 0, b = 0;
    int mWidth = mBtnView.getMeasuredWidth();
    int mHeight = mBtnView.getMeasuredHeight();
    l = getMeasuredWidth() - mWidth;
    t = getMeasuredHeight() - mHeight;
    mBtnView.layout(l, t, getMeasuredWidth(), getMeasuredHeight());
  }

  //获取子菜单按钮
  private void onSubItemButton() {
    int count = getChildCount();
    for (int i = 0; i < count - 1; i++) {
      View childView = getChildAt(i + 1);

      //开始时不呈现子菜单
      childView.setVisibility(View.GONE);

      int radius = 350;
      int cl, ct, cr, cb;

      cr = (int) (radius * Math.sin(Math.PI / 2 / (count - 2) * i));
      cb = (int) (radius * Math.cos(Math.PI / 2 / (count - 2) * i));

      int cWidth = childView.getMeasuredWidth();
      int cHeight = childView.getMeasuredHeight();

      cl = getMeasuredWidth() - cWidth - cr;
      ct = getMeasuredHeight() - cHeight - cb;

      //layout(l,t,r,b);前两参数决定位置，后两参数决定大小
      //参数(1,t)为View控件的左上角坐标
      // (r-l,b-t)为View控件大小,r-l为控件宽度,b-t为控件高度
      childView.layout(cl, ct, getMeasuredWidth() - cr, getMeasuredHeight() - cb);
    }
  }

  //子菜单散开回笼动画
  public void subItemAnim() {
    int count = getChildCount();
    for (int i = 0; i < count - 1; i++) {
      final View childView = getChildAt(i + 1);

      //点击主菜单后，子菜单就立刻呈现，否则后面的动画无法完成
      childView.setVisibility(VISIBLE);

      int radius = 350;
      int l, t, r, d;

      r = (int) (radius * Math.sin(Math.PI / 2 / (count - 2) * i));
      d = (int) (radius * Math.cos(Math.PI / 2 / (count - 2) * i));

//      int cWidth = cView.getMeasuredWidth();
//      int cHeight = cView.getMeasuredHeight();
//
//      l = getMeasuredWidth() - cWidth - r;
//      t = getMeasuredHeight() - cHeight - d;

      AnimationSet mAnimationSet = new AnimationSet(true);
      Animation mTranAnimation = null;
      if (mBStatus == MenuStatus.STATUS_CLOSE) {
 //散开动画
 mTranAnimation = new TranslateAnimation(r, 0, d, 0);
 childView.setClickable(true);
 childView.setFocusable(true);
      } else {
 //回笼动画
 mTranAnimation = new TranslateAnimation(0, r, 0, d);
 childView.setClickable(false);
 childView.setFocusable(false);
      }
      mTranAnimation.setDuration(300);
//      tranAnim.setFillAfter(true); //让最后一帧的动画不消失
      mTranAnimation.setStartOffset(100 * i / count);
      mTranAnimation.setAnimationListener(new Animation.AnimationListener() {
 @Override
 public void onAnimationStart(Animation animation) {

 }

 @Override
 public void onAnimationEnd(Animation animation) {
   if (mBStatus == MenuStatus.STATUS_CLOSE) {
     childView.setVisibility(GONE);
   }
 }

 @Override
 public void onAnimationRepeat(Animation animation) {

 }
      });


      Animation rotateAnim = new RotateAnimation(
   0, 360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
      rotateAnim.setDuration(300);
//      rotateAnim.setFillAfter(false);

      mAnimationSet.addAnimation(rotateAnim);
      mAnimationSet.addAnimation(mTranAnimation);
      childView.startAnimation(mAnimationSet);

      //散开后子菜单的点击监听事件
      final int pos = i + 1;
      childView.setonClickListener(new onClickListener() {
 @Override
 public void onClick(View v) {
   if (onListener != null) {
     onListener.onItemClick(childView, pos);
   }
   //散开后点击子菜单动画
   subItemClickAnim(pos - 1);
   changStatus();
 }
      });
    }
    changStatus();
  }

  //监听子菜单状态改变
  private void changStatus() {
    mBStatus = (mBStatus == MenuStatus.STATUS_CLOSE ? MenuStatus.STATUS_OPEN : MenuStatus.STATUS_CLOSE);
  }

  //散开后点击子菜单动画
  private void subItemClickAnim(int pos) {
    int count = getChildCount();
    for (int i = 0;i

2.SatelliteActivity

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AbsListView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.xinrui.headsettest.arc.SatelliteView;

import java.util.ArrayList;
import java.util.List;

public class SatelliteActivity extends Activity {
  private SatelliteView mSatelliteView;
  private ListView mListView;
  private List mData;
  private ArrayAdapter mAdapter;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.satellite_layout);

    mSatelliteView = (SatelliteView) findViewById(R.id.view_arc);
    mSatelliteView.setonSubItemClickListener(new SatelliteView.onSubItemClickListener() {
      @Override
      public void onItemClick(View view, int position) {
 Toast.makeText(SatelliteActivity.this, "position" + position, Toast.LENGTH_SHORT).show();
      }
    });

    initListView();
  }

  private void initListView() {
    mListView = (ListView) findViewById(R.id.listview);
    mData = new ArrayList();
    for (int i = 'A'; i <= 'z'; i++) {
      mData.add((char) i + "");
    }
    mAdapter = new ArrayAdapter(
 SatelliteActivity.this, android.R.layout.simple_list_item_1, mData);
    mListView.setAdapter(mAdapter);

    mListView.setonScrollListener(new AbsListView.onScrollListener() {
      @Override
      public void onScrollStateChanged(AbsListView view, int scrollState) {

      }

      @Override
      public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 if (mSatelliteView.isOpen()) {
   mSatelliteView.subItemAnim();
 }
      }
    });
  }
}

3.satellite_layout.xml




  

  

    

      
    

    

    

    

    

    

    
  


4.anim动画 在res 新建anim文件夹


satellite_anim.xml



  


bigalpha.xml



  
  


smallalpha.xml



  
  


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