第一个Android简单程序-拼板

package zhch.illq;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.PixelFormat;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.LinearLayout;public class PingBanBoard extends Activity {    /** Called when the activity is first created. */    Map<Integer, MyButton> buttons = new HashMap<Integer, MyButton>();    private Map<Integer, List<Integer>> relation = new HashMap<Integer, List<Integer>>();    // 图片分的除数    private int colNum = 4;    // 当前空白按钮    private int currentBlank = colNum * colNum - 1;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        LinearLayout mainPanel = (LinearLayout) findViewById(R.id.mainPanel);        // 创建放图片的按钮        for (int i = 0; i < colNum; i++) {            LinearLayout subLayout = new LinearLayout(this);            mainPanel.addView(subLayout);            for (int j = 0; j < colNum; j++) {                MyButton button = new MyButton(this);                buttons.put(i * colNum + j, button);                subLayout.addView(button);            }        }        Drawable mm = getResources().getDrawable(R.drawable.mm);        buttons.get(1).setBackgroundDrawable(cuteImage(mm, colNum, 1, 1));        // 设置图片        for (int i = 0; i < (colNum * colNum); i++) {            buttons.get(i).setBackgroundDrawable(cuteImage(mm, colNum, i % colNum, i / colNum));            android.util.Log.v("number 1", "" + i / colNum + "===" + i % colNum);        }        // 设置按钮监听器        for (int i = 0; i < (colNum * colNum); i++) {            MyButton button = (MyButton) buttons.get(i);            button.position = i;            button.setOnClickListener(new OnClickListener() {                @Override                public void onClick(View v) {                    MyButton view = (MyButton) v;                    if (moveable(colNum, view.position, currentBlank)) {                        android.util.Log.v("currentBlank", "" + currentBlank);                        MyButton blankView = (MyButton) buttons.get(currentBlank);                        Drawable temp = blankView.getBackground();                        blankView.setBackgroundDrawable(view.getBackground());                        view.setBackgroundDrawable(temp);                        currentBlank = view.position;                        android.util.Log.v("currentBlank ", "" + currentBlank);                    }                }            });        }    }    /**     * 取正方形图片的一部分     *      * @param drawable     *            图片     * @param count     *            总行数     * @param row     *            行     * @param col     *            列     * @return     */    public final BitmapDrawable cuteImage(Drawable drawable, int count, int row, int col) {        int sideLength = drawable.getIntrinsicWidth(); // 取drawable的边长        // 取小块的边长        int subLength = sideLength / count;        Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888            : Bitmap.Config.RGB_565; // 取drawable的颜色格式        Bitmap bitmap = Bitmap.createBitmap(sideLength, sideLength, config); // 建立对应bitmap        Canvas canvas = new Canvas(bitmap); // 建立对应subBitmap的画布        canvas.clipRect(0, 0, sideLength, sideLength);        drawable.setBounds(0, 0, sideLength, sideLength);        if ((row + 1) * (col + 1) != count * count) {            drawable.draw(canvas); // 把drawable内容画到画布中        }        Bitmap subBitmap = Bitmap.createBitmap(bitmap, row * subLength, col * subLength, subLength, subLength);// 取图的一部分        return new BitmapDrawable(subBitmap);    }    /**     * 判断当前位置是否可以移动     *      * @param colNum     *            分割的阶数     * @param position     *            点击的位置     * @param current     *            当前空白位置     * @return 是否能移动     */    private boolean moveable(int colNum, int position, int current) {        android.util.Log.v("Math.abs(position - current) ", "" + Math.abs(position - current));        android.util.Log.v("Math.max(position, current) ", "" + Math.max(position, current));        if (Math.abs(position - current) == colNum) {            return true;        }        if ((Math.abs(position - current) == 1) && (Math.max(position, current) % colNum != 0)) {            return true;        }        return false;    }}
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