Android 拼图游戏

1、将图片分成n*n等份
2、自定义布局文件，继承RelativeLayout，在onMeasure里面排列每一小片的图片
3、实现图片交换的动画，这个动画有意思，创建一个动画专用的RelativeLayout，添加上去，把要交换的两张图复制到面板上，然后用位移动画实现动画效果，动画结束后修改原来两个位置的图片信息，移除动画面板。

public class GamePintuLayout extends RelativeLayout implements OnClickListener
{

/**
* 设置Item的数量n*n；默认为2
*/
private int mColumn = 3;
/**
* 布局的宽度
*/
private int mWidth;
/**
* 布局的padding
*/
private int mPadding;
/**
* 存放所有的Item
*/
private ImageView[] mGamePintuItems;
/**
* Item的宽度
*/
private int mItemWidth;

/**
* Item横向与纵向的边距
*/
private int mMargin = 3;

/**
* 拼图的图片
*/
private Bitmap mBitmap;
/**
* 存放切完以后的图片bean
*/
private List<ImagePiece> mItemBitmaps;

private boolean once;

public GamePintuLayout(Context context)
{
this(context, null);
}

public GamePintuLayout(Context context, AttributeSet attrs)
{
this(context, attrs, 0);
}

public GamePintuLayout(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);

mMargin = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
mMargin, getResources().getDisplayMetrics());
// 设置Layout的内边距，四边一致，设置为四内边距中的最小值
mPadding = min(getPaddingLeft(), getPaddingTop(), getPaddingRight(),
getPaddingBottom());
}

public void setBitmap(Bitmap mBitmap)
{
this.mBitmap = mBitmap;
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
super.onMeasure(widthMeasureSpec, heightMeasureSpec);

// 获得游戏布局的边长
mWidth = Math.min(getMeasuredHeight(), getMeasuredWidth());

if (!once)
{
initBitmap();
initItem();
}
once = true;
setMeasuredDimension(mWidth, mWidth);
}

/**
* 初始化图片
*/
private void initBitmap()
{
if (mBitmap == null)
mBitmap = BitmapFactory.decodeResource(getResources(),
R.drawable.aa);

/**
* 将图片切成mColumn*mColumn份
*/
mItemBitmaps = ImageSplitter.split(mBitmap, mColumn);

Collections.sort(mItemBitmaps, new Comparator<ImagePiece>()
{
@Override
public int compare(ImagePiece lhs, ImagePiece rhs)
{
return Math.random() > 0.5 ? 1 : -1;
}
});
}

/**
* 初始化Item
*/
private void initItem()
{
// 获得Item的宽度
int childWidth = (mWidth - mPadding * 2 - mMargin * (mColumn - 1))
/ mColumn;
mItemWidth = childWidth;
mGamePintuItems = new ImageView[mColumn * mColumn];
// 放置Item
for (int i = 0; i < mGamePintuItems.length; i++)
{
ImageView item = new ImageView(getContext());

item.setOnClickListener(this);

item.setImageBitmap(mItemBitmaps.get(i).bitmap);
mGamePintuItems[i] = item;

item.setId(i + 1);
item.setTag(i + "_" + mItemBitmaps.get(i).index);

RelativeLayout.LayoutParams lp = new LayoutParams(mItemWidth,
mItemWidth);
// 设置横向边距,不是最后一列
if ((i + 1) % mColumn != 0)
{
lp.rightMargin = mMargin;
}
// 如果不是第一列
if (i % mColumn != 0)
{
lp.addRule(RelativeLayout.RIGHT_OF,//
mGamePintuItems[i - 1].getId());
}
// 如果不是第一行，//设置纵向边距，非最后一行
if ((i + 1) > mColumn)
{
lp.topMargin = mMargin;
lp.addRule(RelativeLayout.BELOW,//
mGamePintuItems[i - mColumn].getId());
}
addView(item, lp);
}

}

/**
* 得到多值中的最小值
*
* @param params
* @return
*/
private int min(int... params)
{
int min = params[0];
for (int param : params)
{
if (min > param)
{
min = param;
}
}
return min;
}

private ImageView mFirst;
private ImageView mSecond;

@Override
public void onClick(View v)
{
// 如果正在执行动画，则屏蔽
if (isAniming)
return;
/**
* 如果两次点击是同一个
*/
if (mFirst == v)
{
mFirst.setColorFilter(null);
mFirst = null;
return;
}
// 点击第一个Item
if (mFirst == null)
{
mFirst = (ImageView) v;
mFirst.setColorFilter(Color.parseColor("#55FF0000"));
} else
// 点击第二个Item
{
mSecond = (ImageView) v;
exchangeView();
}

}

/**
* 动画运行的标志位
*/
private boolean isAniming;
/**
* 动画层
*/
private RelativeLayout mAnimLayout;

/**
* 交换两个Item的图片
*/
private void exchangeView()
{
mFirst.setColorFilter(null);
setUpAnimLayout();
// 添加FirstView
ImageView first = new ImageView(getContext());
first.setImageBitmap(mItemBitmaps
.get(getImageIndexByTag((String) mFirst.getTag())).bitmap);
LayoutParams lp = new LayoutParams(mItemWidth, mItemWidth);
lp.leftMargin = mFirst.getLeft() - mPadding;
lp.topMargin = mFirst.getTop() - mPadding;
first.setLayoutParams(lp);
mAnimLayout.addView(first);
// 添加SecondView
ImageView second = new ImageView(getContext());
second.setImageBitmap(mItemBitmaps
.get(getImageIndexByTag((String) mSecond.getTag())).bitmap);
LayoutParams lp2 = new LayoutParams(mItemWidth, mItemWidth);
lp2.leftMargin = mSecond.getLeft() - mPadding;
lp2.topMargin = mSecond.getTop() - mPadding;
second.setLayoutParams(lp2);
mAnimLayout.addView(second);

// 设置动画
TranslateAnimation anim = new TranslateAnimation(0, mSecond.getLeft()
- mFirst.getLeft(), 0, mSecond.getTop() - mFirst.getTop());
anim.setDuration(300);
anim.setFillAfter(true);
first.startAnimation(anim);

TranslateAnimation animSecond = new TranslateAnimation(0,
mFirst.getLeft() - mSecond.getLeft(), 0, mFirst.getTop()
- mSecond.getTop());
animSecond.setDuration(300);
animSecond.setFillAfter(true);
second.startAnimation(animSecond);
// 添加动画监听
anim.setAnimationListener(new AnimationListener()
{

@Override
public void onAnimationStart(Animation animation)
{
isAniming = true;
mFirst.setVisibility(INVISIBLE);
mSecond.setVisibility(INVISIBLE);
}

@Override
public void onAnimationRepeat(Animation animation)
{

}

@Override
public void onAnimationEnd(Animation animation)
{
String firstTag = (String) mFirst.getTag();
String secondTag = (String) mSecond.getTag();

String[] firstParams = firstTag.split("_");
String[] secondParams = secondTag.split("_");

mFirst.setImageBitmap(mItemBitmaps.get(Integer
.parseInt(secondParams[0])).bitmap);
mSecond.setImageBitmap(mItemBitmaps.get(Integer
.parseInt(firstParams[0])).bitmap);

mFirst.setTag(secondTag);
mSecond.setTag(firstTag);

mFirst.setVisibility(VISIBLE);
mSecond.setVisibility(VISIBLE);
mFirst = mSecond = null;
mAnimLayout.removeAllViews();
checkSuccess();
isAniming = false;
}
});

}

/**
* 判断游戏是否成功
*/
private void checkSuccess()
{
boolean isSuccess = true;
for (int i = 0; i < mGamePintuItems.length; i++)
{
ImageView first = mGamePintuItems[i];
Log.e("TAG", getIndexByTag((String) first.getTag()) + "");
if (getIndexByTag((String) first.getTag()) != i)
{
isSuccess = false;
}
}

if (isSuccess)
{
Toast.makeText(getContext(), "Success , Level Up !",
Toast.LENGTH_LONG).show();
nextLevel();
}
}

public void nextLevel()
{
this.removeAllViews();
mAnimLayout = null;
mColumn++;
initBitmap();
initItem();
}

/**
* 获得图片的真正索引
*
* @param tag
* @return
*/
private int getIndexByTag(String tag)
{
String[] split = tag.split("_");
return Integer.parseInt(split[1]);
}

private int getImageIndexByTag(String tag)
{
String[] split = tag.split("_");
return Integer.parseInt(split[0]);

}

/**
* 创建动画层
*/
private void setUpAnimLayout()
{
if (mAnimLayout == null)
{
mAnimLayout = new RelativeLayout(getContext());
addView(mAnimLayout);
}

}

}