Android评论图片可移动顺序选择器(推荐)

package com.test.jiupin.view;import android.content.Context;import android.util.AttributeSet;import android.view.View;import android.widget.FrameLayout;/** * Created by liaoyalong on 2016/12/8. */public class AddImageGridView extends FrameLayout{  private int width = 0;   //图片宽  private int height = 0;    //图片高  private int space = dp2px(10); //图片之间间隙  private int childCount = 0;  //孩子数  public AddImageGridView(Context context) {    this(context,null);  }  public AddImageGridView(Context context, AttributeSet attrs) {    this(context, attrs,0);  }  public AddImageGridView(Context context, AttributeSet attrs, int defStyleAttr) {    super(context, attrs, defStyleAttr);    init();  }  private void init() { //额没用上  }  public int getmSpace(){    return space;  }  public int getmWidth() {    return width;  }  public int getmHeight() { //这里我设置了宽高一样 ，所以也没用上    return height;  }  public void addCammary(View view){ //添加相机 ，是第一个孩子    addView(view,0);  }  public void addView(View view){   //添加子vie后控件会自动重新测量布局    childCount = getChildCount();    if(childCount == 5){         //最多能添加5张图片，既当添加到第五张图片的时候把相机删了      removeViewAt(0);      addView(view,4);    } else{      addView(view,childCount);    }  }  @Override //最关键的了  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {    childCount = getChildCount();    int wdWidth = MeasureSpec.getSize(widthMeasureSpec);    width = (wdWidth - 3 * space) / 4;           //屏幕分为三份间隙 和四份图片的宽度    space += wdWidth % 4 / 3;               //重新计算间隙    height = width;                    //高度和宽度一样    int childWidthSPEC = MeasureSpec.makeMeasureSpec(width,MeasureSpec.EXACTLY);    //精确测量    int childHeightSPEC = MeasureSpec.makeMeasureSpec(height,MeasureSpec.EXACTLY);    for (int i = 0; i < childCount; i++) {      View view = getChildAt(i);      view.measure(childWidthSPEC,childHeightSPEC);    }    int wdHeight = height;    if(childCount > 4){      wdHeight += height + space;              //最多有五个既超过四个，高度变成两层    }    setMeasuredDimension(wdWidth,wdHeight);               }  @Override  protected void onLayout(boolean changed, int left, int top, int right, int bottom) {    for (int i = 0; i < childCount; i++) {     //上面我们自己测量好了，这里我们自己放控件的位置，不需要管原来left,top之类的值      View view = getChildAt(i);      left = 0;      top = 0;      if(i > 0){        left = i * width + i * space;     //每个孩子对应的位置，自己画图分析      }      if(i == 4){ //第二层        left = 0;        top = height + space;      }      right = left + width;      bottom = top + height;      view.layout(left,top,right,bottom);    }  }  public int dp2px(int dp){    return (int) (getResources().getDisplayMetrics().density * dp +.5);  }}

package com.test.jiupin.view;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Rect;import android.view.MotionEvent;import android.view.View;/** * Created by liaoyalong on 2016/12/12. */public class moveView extends View{  private Bitmap mBitmap; //按1秒钟图片的bitmap 既原显示的都是imageview 我把它们显示的bitmap 用iv.set(bitmap)  private int left;    //相对屏幕的位置，画的时候要用  private int top;    //同上理  private int width;   //点击的图片的宽度  private int height;     private int mStatusBarheight; //手机屏幕状态栏高度  private int wdWidth;      //屏幕宽度  private int wdHeight;     //屏幕高度  private int orgTop;      //刚点击时 点击图片相对屏幕的高度  public moveView(Context context,View v,MotionEvent event,boolean is4,int spac) {    super(context);    mBitmap = (Bitmap) v.getTag();    //从点击的图片那获取bitmap    left = (int) (event.getRawX() - event.getX());   //相对屏幕像素 - 相对控件像素    top = (int) (event.getRawY() - event.getY());    orgTop = top;    width = v.getWidth();    height = v.getHeight();    if (is4){                  //第二层      orgTop = orgTop - height - spac;    }    mStatusBarheight = getStatusBarHeight();      //状态栏高度    wdWidth = getResources().getDisplayMetrics().widthPixels;     //    wdHeight = getResources().getDisplayMetrics().heightPixels;  }  @Override  protected void onDraw(Canvas canvas) {    canvas.save();    canvas.translate(0,-mStatusBarheight);//移状态栏高度，这里不懂看我前面QQ移动小球的文章    if(left < 0){      left = 0;    }else if(left + width > wdWidth){        //不能移出屏幕      left = wdWidth - width;    }    if (top < mStatusBarheight){      top = mStatusBarheight;    }else if(top + height > wdHeight){      top = wdHeight - height;    }    canvas.drawBitmap(mBitmap,null,new Rect(left,top,left+width,top+height),null);    canvas.restore();  }  @Override  public boolean onTouchEvent(MotionEvent event) {    switch (event.getAction()){      case MotionEvent.ACTION_DOWN:        break;      case MotionEvent.ACTION_MOVE:        left = (int) (event.getRawX()-width/2); //手指点的为中心点        top = (int) (event.getRawY()-height/2);        if (mOnDragListener != null){       //回调方法，返回中心点与其它图片进行比较          mOnDragListener.onMove((int)event.getRawX(),(int)event.getRawY() +mStatusBarheight - orgTop - height/2);        }        postInvalidate();        break;      case MotionEvent.ACTION_UP:        if (mOnDragListener != null){  //手抬起时触发消失回调          mOnDragListener.onDisappear();        }        break;    }    return true;  }  public int getStatusBarHeight() {//获取状态栏高度    int result = 0;    int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");    if (resourceId > 0) {      result = getResources().getDimensionPixelSize(resourceId);    }    return result;  }  public interface OnDragListener{    void onDisappear();    void onMove(int centerX,int centerY);  }  private OnDragListener mOnDragListener;  public void setOnDragListener(OnDragListener listener){    mOnDragListener = listener;  }}

/**   * 该不该交换图片   *   * @param wx  移动传回来的中心点   * @param wy   * @param x   与之相比较的点   * @param y   * @param range 比较范围   * @return   */  private boolean shouldReplace(int wx, int wy, int x, int y, int range) {    boolean flag = false;    if (wx > x - range && wx < x + range && wy > y - range && wy < y + range) {      flag = true;    }    return flag;  }

private void initMoveListener() {    for (int i = 0; i < mViews.size(); i++) {  //mViews存的那些评论图片      final int finalI = i;      mViews.get(i).setOnTouchListener(new View.OnTouchListener() {        @Override        public boolean onTouch(final View v, final MotionEvent event) {          if (MotionEvent.ACTION_DOWN == event.getAction()) {            downTime = System.currentTimeMillis();       //按下时的时间            v.getParent().requestDisallowInterceptTouchEvent(true); //请求父控件不要拦截触摸事件          } else {            spacTime = System.currentTimeMillis() - downTime;     //按了多久          }//          Log.e("test",spacTime+"");          if (!first && spacTime > 1000) { //按了一秒才让移动              curentSpace = finalI;   //当前按得位置            first = true;            v.setVisibility(View.INVISIBLE);  //把按得图片隐藏            if (mViews.size() < 5) {     //创建移动图片              if (finalI != 3) {                mMoveView = new moveView(MainActivity.this, v, event, false, 0);              } else {                mMoveView = new moveView(MainActivity.this, v, event, true, mAddImageGridView                    .getmSpace());              }            } else {              if (finalI != 4) {                mMoveView = new moveView(MainActivity.this, v, event, false, 0);              } else {                mMoveView = new moveView(MainActivity.this, v, event, true, mAddImageGridView                    .getmSpace());              }            }            mWindowManager.addView(mMoveView, mParams);//添加移动图片,注意mParams.format = PixelFormat.TRANSLUCENT;            fisselect = (Bitmap) v.getTag(); //刚开始按选择的图片，用于放手时显示，            mMoveView.setOnDragListener(new moveView.OnDragListener() {//moveView的滑动监听              @Override              public void onDisappear() {     //手抬起时                if (mMoveView != null && mWindowManager != null) {                  mWindowManager.removeView(mMoveView); //移除                  v.setOnTouchListener(new View.OnTouchListener() { //消失的时候覆盖触摸事件，不然第二次就不需要按一秒了                    @Override                    public boolean onTouch(View v, MotionEvent event) {                      return false;                    }                  });                  mMoveView = null;                }//                    Log.e("test","curentSpace:"+curentSpace);                ImageView iv = (ImageView) mViews.get(curentSpace);                iv.setImageBitmap(fisselect);     //第一次按时选择的图片                iv.setVisibility(View.VISIBLE);                iv.setTag(fisselect);                        first = false;                spacTime = 0L;                initMoveListener();              }              int width = mAddImageGridView.getmWidth(); //图片宽度              int spc = mAddImageGridView.getmSpace();  //图片之间间隙              @Override              public void onMove(int centerX, int centerY) { //返回中心点的回调                for (int j = 0; j < mViews.size(); j++) { //算各个图片的中心点，依次进行比较                  if (j != curentSpace) {                    int x = 0;                    int y = 0;                    if (mViews.size() < 5) {                      if (j < 3) { //第一排的中心点                        x = (j + 2) * width + (j + 1) * spc - width / 2;                        y = width / 2;                      } else if (j != curentSpace && j >= 3) { //第二排的中心点。图片宽高相等                        x = (j - 3) * (width + spc) + width / 2;                        y = width + spc + width / 2;                      }                    } else {                      if (j < 4) { //第一排的中心点                        x = (j + 1) * width + j * spc - width / 2;                        y = width / 2;                      } else if (j != curentSpace && j >= 4) { //第二排的中心点。图片宽高相等                        x = (j - 4) * (width + spc) + width / 2;                        y = width + spc + width / 2;                      }                    }                    if (shouldReplace(centerX, centerY, x, y, 70)) {  //如果要与J位置的view进行交换//                          Log.e("test","currenspac:"+curentSpace + "  j:"+j);                      Bitmap bitmap = (Bitmap) mViews.get(j).getTag();   //获得j位置的bitmap                      mViews.get(j).setVisibility(View.INVISIBLE);     //把j位置对应的view隐藏                      ImageView iv = (ImageView) mViews.get(curentSpace);  //原来隐藏的bitmap                      iv.setImageBitmap(bitmap);              //原来隐藏的view换成j的bitmap                       iv.setVisibility(View.VISIBLE);           //把原来隐藏的view显示                      iv.setTag(bitmap);     //如果交换，把交换的那个隐藏，原来隐藏的显示，并把图片设置为交换的、还要保持tag                      curentSpace = j;      //当前空位换为交换既隐藏的那个位置，当松手时要显示，最原始的的bitmap前面已经保存//                          Log.e("test","currenspac:"+curentSpace + "  j:"+j);                      break; //交换停止本次循环                    }                  }                }              }            });          }          if (mMoveView != null) {            mMoveView.onTouchEvent(event); //把触摸事件传递给move控件          }          return false; //还要处理点击事件        }      });    }  }