android 继承viewgroup, 自定义布局，拖动效果，增删效果

/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.customlayout; import android.app.Activity; //import android.app.INotificationManager; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.ColorFilter; import android.graphics.LightingColorFilter; import android.graphics.Paint; import android.graphics.Rect; import android.graphics.RectF; import android.graphics.Bitmap.Config; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.util.Log; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.ViewDebug; import android.view.ViewGroup; import android.view.ViewParent; import android.view.View.OnLongClickListener; import android.widget.CompoundButton; import android.widget.FrameLayout; import android.widget.ImageView; import android.widget.Toast; public class CustomLayout extends ViewGroup implements View.OnTouchListener, View.OnClickListener, OnLongClickListener { static final String TAG = "CustomLayout"; private int mWidthGap = 20; private int mHeightGap = 20; private int mCellWidth = 80; private int mCellHeight = 120; private float mRatio = 0; private final int MAX_ITEM_NUM = 9; private int[][] mLayout; private final int[][] finalarray={{3,3,3},{3,3,3},{3,3,3},{3,3,3},{3,3,3},{3,3,3},{3,3,3},{3,3,3},{3,3,3}}; private int mItemCount = 0; private int mSelectedPosition = 0; private Activity mLauncher; private CustomLayout.Animate mCustomAnimate = new CustomLayout.Animate(); private Rect[] mChildRects; private static final Object ADD_BTN_TAG = new Object(); private WorkspaceQuickViewInfoProvider mWsQVProvider; public CustomLayout(Context context) { super(context); mLauncher = (Activity) context; setlayoutarray(finalarray,0); } public CustomLayout(Context context,AttributeSet attrs){ super(context, attrs); mLauncher = (Activity) context; setlayoutarray(finalarray,0); } public CustomLayout(Context context, int[][] layout,float ratio) { super(context); setlayoutarray(layout,ratio); } public void setlayoutarray(int[][] layout,float ratio){ mLayout = new int[layout.length][]; for(int i = 0; i < layout.length; i++){ mLayout[i] = new int[layout[i].length]; for(int j = 0; j < layout[i].length; j++){ mLayout[i][j] = layout[i][j]; } } mRatio = ratio; requestLayout(); } public void enableHardwareLayers() { setLayerType(LAYER_TYPE_HARDWARE, null); } public View getChildAt(int x, int y) { final int count = getChildCount(); for (int i = 0; i < count; i++) { View child = getChildAt(i); CustomLayout.LayoutParams lp = (CustomLayout.LayoutParams) child.getLayoutParams(); if ((lp.x <= x) && (x < lp.x + lp.width) && (lp.y <= y) && (y < lp.y + lp.height)) { return child; } } return null; } public int getLayoutMaxColumn(){ int distro_set = mItemCount-1; int maxItemsPerColumn = -1; if(distro_set < 0){ return 0; } for(int column = 0; column<mLayout[distro_set].length; column++){ if(mLayout[distro_set][column]>maxItemsPerColumn ){ maxItemsPerColumn = mLayout[distro_set][column]; } } return maxItemsPerColumn; } public int getLayoutMaxRow(){ int distro_set = mItemCount-1; return distro_set>=0?mLayout[distro_set].length:0; } public void setUpGap(int width,int height,int widthGap,int heightGap){ mCellWidth = width; mCellHeight = height; mWidthGap = widthGap; mHeightGap = heightGap; } public void setup(int position,CustomLayout.LayoutParams layoutParam){ int nWidth = getMeasuredWidth() - getPaddingRight() - getPaddingLeft(); int nHeight = getMeasuredHeight()- getPaddingTop() - getPaddingBottom()-85; int maxRow = getLayoutMaxRow(); int maxColumn= getLayoutMaxColumn(); mCellWidth = (nWidth-mWidthGap*(maxColumn+1))/maxColumn; mCellHeight = (nHeight - mHeightGap*(maxRow+1))/maxRow; int bigWidth = (int)(mCellHeight*mRatio); if(bigWidth > mCellWidth){ mCellHeight = (int)(mCellWidth/mRatio); }else{ mCellWidth = bigWidth; } int pos = position+1; int posX = 0; int posY = 0; if(mLayout.length >= mItemCount){ for(int i = 0;i<mLayout[mItemCount-1].length;i++){ if(pos - mLayout[mItemCount-1][i]>0){ pos = pos - mLayout[mItemCount-1][i]; posY++; }else{ posX = pos-1; break; } } } int nColumn = mLayout[mItemCount-1][posY]; int x = (nWidth - (nColumn*mCellWidth)-(nColumn-1)*mWidthGap)/2 + posX*(mCellWidth+mWidthGap); int y = (nHeight - (maxRow*mCellHeight)-(maxRow-1)*mHeightGap)/2 + posY*(mCellHeight+mHeightGap); layoutParam.setPos(x,y,mCellWidth,mCellHeight); } public void setupPos(int position,CustomLayout.LayoutParams layoutParam){ int pos = position+1; int posX = 0; int posY = 0; if(mLayout.length >= mItemCount){ for(int i = 0;i<mLayout[mItemCount-1].length;i++){ if(pos - mLayout[mItemCount-1][i]>0){ pos = pos - mLayout[mItemCount-1][i]; posY++; }else{ posX = pos-1; break; } } } int nColumn = mLayout[mItemCount-1][posY]; int x = (getMeasuredWidth() - (nColumn*mCellWidth)-(nColumn-1)*mWidthGap)/2 + posX*(mCellWidth+mWidthGap); int y = posY*mCellHeight+ (posY+1)*mHeightGap; layoutParam.setPos(x,y,mCellWidth,mCellHeight); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); int widthSize = MeasureSpec.getSize(widthMeasureSpec); int heightSize = MeasureSpec.getSize(heightMeasureSpec); mItemCount = getChildCount(); for (int i = 0; i < mItemCount; i++) { View child = getChildAt(i); measureChild(child,i,mItemCount); if(child != null ){ child.setOnClickListener(this); child.setOnLongClickListener(this); // child.setOnTouchListener(this); } } setMeasuredDimension(widthSize, heightSize); } public void measureChild(View child,int position,int nitem) { CustomLayout.LayoutParams layoutParam = (CustomLayout.LayoutParams) child.getLayoutParams(); if(layoutParam == null){ layoutParam = new CustomLayout.LayoutParams(); } if(mRatio > 0.00001){ this.setup(position,layoutParam); }else{ this.setupPos(position,layoutParam); } child.setLayoutParams(layoutParam); int childWidthMeasureSpec = MeasureSpec.mak