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先看ANDROID QQ截图：
再看DEMO截图：
直接看代码： public class test3 extends Activity {
private NewLayOut layout;
private myThread mThread;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LayoutInflater inflater = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);
layout = (NewLayOut) inflater.inflate(R.layout.move, null);
ImageView button = (ImageView)layout.findViewById(R.id.ImageView01);
button.setOnClickListener(mClickListener);
ImageView button2 = (ImageView)layout.findViewById(R.id.ImageView02);
button2.setOnClickListener(mClickListener);
ImageView button3 = (ImageView)layout.findViewById(R.id.ImageView03);
button3.setOnClickListener(mClickListener);
this.setContentView(layout);
}
private View.OnClickListener mClickListener = new View.OnClickListener() {
public void onClick(View v) {
startMove(v);
}
};
private void startMove(View v)
{
stopThread();//停止之前的线程
mThread = new myThread(v);
mThread.start();
}
private void stopThread()
{
if (mThread != null)
{
try
{
layout.mIsStop = true;
mThread.join();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
class myThread extends Thread
{
private View mView;
public myThread(View v){ this.mView = v; }
public void run() {
layout.doWork(this.mView);
}
}
}
NewLayOut 类 继承 LinearLayout，因为需要在LinearLayout里面画图
package test3.program;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.LinearLayout;
public class NewLayOut extends LinearLayout {
private static final short SPEED = 15;
private Context mContext;
private Rect mNowRect;//当前的区域
private Rect mEndRect;//结束的区域
private BitmapDrawable mSelecter;//移动的半透明背景bitmaip
private boolean mSyn = false;//循环和onDraw同步
public boolean mIsStop = false;//是否到达指定区域
public NewLayOut(Context context) {
super(context);
init(context);
}
public NewLayOut(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
private void init(Context context)
{
mContext = context;
mSelecter = new BitmapDrawable(
BitmapFactory.decodeResource(mContext.getResources(),
R.drawable.topbar_select));
mNowRect = new Rect();
mEndRect = new Rect();
}
protected void onLayout(boolean paramBoolean, int paramInt1, int paramInt2, int paramInt3, int paramInt4)
{
super.onLayout(paramBoolean, paramInt1, paramInt2, paramInt3, paramInt4);
this.getChildAt(0).getHitRect(mNowRect);//取得第一个控制区域作为起始区域
}
/**
*
* @param v 目标控件
*/
public void doWork(View v)
{
v.getHitRect(this.mEndRect);
if (this.mNowRect.right < this.mEndRect.right)
{
work(new RunForword()
{
public void run()
{
mNowRect.left += SPEED;//每次左边移动15格
mNowRect.right += SPEED;//每次右边移动15格
System.out.println("is run run run");
if (mNowRect.right >= mEndRect.right)//如果移动超出或等于目标区域
ReachRect();
}
});
}
else if(this.mNowRect.right > this.mEndRect.right)
{
work(new RunForword()
{
public void run()
{
mNowRect.left -= SPEED;//每次左边移动15格
mNowRect.right -= SPEED;//每次右边移动15格
if (mNowRect.right <= mEndRect.right)//如果移动超出或等于目标区域
ReachRect();
}
});
}
}
private void work(RunForword run)
{
this.mIsStop = false;
while(!this.mIsStop)
{
if(this.mSyn)//画图与循环同步
{
run.run();
System.out.println("is running!");
this.mSyn = false;
this.postInvalidate();
//Thread.sleep(35);
}
}
}
/**
* 到达目的地
*/
private void ReachRect()
{
mNowRect.left = mEndRect.left;
mNowRect.right = mEndRect.right;
mIsStop = true;
}
protected void onDraw(Canvas canvas)
{
super.onDraw(canvas);
mSelecter.setBounds(mNowRect);
mSelecter.draw(canvas);
this.mSyn = true;
System.out.println("is ondraw");
}
public interface RunForword
{
void run();
}
} |
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发表于 2011-10-22 13:37:06
发表于 2011-10-22 13:37:56
