Android中layout.xml檔案中載入自訂的View類

標籤：android   c   class   blog   code   java   

      <com.bn.summer.GGView3      android:layout_width="100dip"       android:layout_height="114dip"         android:layout_marginLeft="11dip"   />

View類的實現：

package com.bn.summer;import android.content.Context;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Paint;import android.util.AttributeSet;import android.view.View;public class GGView3 extends View{int COMPONENT_WIDTH;int COMPONENT_HEIGHT;boolean initflag=false;Bitmap[] bma;Paint paint;int[] drawablesId;int currIndex=0;boolean workFlag=true;public GGView3(Context father,AttributeSet as) { super(father,as);this.drawablesId=new int[]{R.drawable.room1,R.drawable.room2,R.drawable.room3,};bma=new Bitmap[drawablesId.length];initBitmaps();paint=new Paint();paint.setFlags(Paint.ANTI_ALIAS_FLAG);//消除鋸齒new Thread(){public void run(){while(workFlag){currIndex=(currIndex+1)%drawablesId.length;GGView3.this.postInvalidate();try {Thread.sleep(2500);} catch (InterruptedException e) {e.printStackTrace();}}}}.start();}public void initBitmaps(){Resources res=this.getResources();for(int i=0;i<drawablesId.length;i++){bma[i]=BitmapFactory.decodeResource(res, drawablesId[i]);}}public void onDraw(Canvas canvas){if(!initflag){COMPONENT_WIDTH=this.getWidth();//擷取view的寬度COMPONENT_HEIGHT=this.getHeight();//擷取view的高度initflag=true;}int picWidth=bma[currIndex].getWidth();int picHeight=bma[currIndex].getHeight();int startX=(COMPONENT_WIDTH-picWidth)/2;int startY=(COMPONENT_HEIGHT-picHeight)/2;//繪製背景色//canvas.drawARGB(255, 244, 214, 116);canvas.drawARGB(255, 200, 128, 128);canvas.drawBitmap(bma[currIndex], startX,startY, paint);}}