1、onCreate中的所有代碼及其子代碼執(zhí)行完成之前，里面設置的所有View是獲取不到坐標的。

即：沒到運行狀態(tài)，view.getX()獲取不到，結果都是0。（如果debug會發(fā)現(xiàn)，在oncreate中，即使走過了代碼添加addView(),但此時界面并沒有繪制View）

所以要判斷，首次運行的時候，可以交換ImageView圖片方塊的內(nèi)容，但是不能走動畫，因為動畫是通過getX()這種方法實現(xiàn)的。

我這邊設置的是isAnim變量，首次不加載動畫（達到了首次不會執(zhí)行getX()這個效果）

private?boolean?isAnim?=?false;

onCreate(){
???//……
???//隨機打亂順序，這時onCreate還沒有執(zhí)行完，getX()肯定是0，但是默認isAnim是false，可以直接交換。
???isAnim?=?false;//在整個onCreate最后寫，已經(jīng)過了首次，以后可以執(zhí)行動畫了
}

public?void?changeDataByImageView(final?ImageView?mImageView)?{
		if(!isAnim){//不要執(zhí)行動畫，算是首次運行,直接開始交換
			ImageViewData?data1?=?(ImageViewData)?mImageView.getTag();
			ImageViewData?data2?=?(ImageViewData)?iv_null.getTag();
			iv_null.setImageBitmap(data1.imageView);
			data2.imageView?=?data1.imageView;
			data2.p_x?=?data1.p_x;
			data2.p_y?=?data2.p_y;
			//?設置當前點擊的是空方塊
			setNullImageView(mImageView);
			return;
		}
		//……
}

2、發(fā)現(xiàn)一個bug，移動時的效果動畫都是從左向右的，需要去掉多余的代碼。

====================修改后如下=================

package?com.charspan.pintu;

import?android.app.Activity;
import?android.graphics.Bitmap;
import?android.graphics.BitmapFactory;
import?android.os.Bundle;
import?android.view.GestureDetector;
import?android.view.GestureDetector.OnGestureListener;
import?android.view.MotionEvent;
import?android.view.View;
import?android.view.View.OnClickListener;
import?android.view.animation.Animation;
import?android.view.animation.Animation.AnimationListener;
import?android.view.animation.TranslateAnimation;
import?android.widget.GridLayout;
import?android.widget.ImageView;
import?android.widget.Toast;

public?class?MainActivity?extends?Activity?{

	private?int?rowsNum?=?3;
	private?int?colsNum?=?5;
	private?boolean?isAnim?=?false;
	/**
	?*?利用二維數(shù)組創(chuàng)建若干個游戲小方塊
	?*/
	private?ImageView[][]?iv_game_arr;
	/**
	?*?當前空方塊的實例
	?*/
	private?ImageView?iv_null;

	/**
	?*?游戲主界面
	?*/
	private?GridLayout?gl_main_game;
	/**
	?*?當前手勢
	?*/
	private?GestureDetector?mDetector;

	@Override
	public?boolean?onTouchEvent(MotionEvent?event)?{
		//?TODO?Auto-generated?method?stub
		return?mDetector.onTouchEvent(event);
	}

	@Override
	protected?void?onCreate(Bundle?savedInstanceState)?{
		super.onCreate(savedInstanceState);
		mDetector?=?new?GestureDetector(this,?new?OnGestureListener()?{

			@Override
			public?boolean?onSingleTapUp(MotionEvent?e)?{
				//?TODO?Auto-generated?method?stub
				return?false;
			}

			@Override
			public?void?onShowPress(MotionEvent?e)?{
				//?TODO?Auto-generated?method?stub

			}

			@Override
			public?boolean?onScroll(MotionEvent?e1,?MotionEvent?e2,?float?distanceX,?float?distanceY)?{
				//?TODO?Auto-generated?method?stub
				return?false;
			}

			@Override
			public?void?onLongPress(MotionEvent?e)?{
				//?TODO?Auto-generated?method?stub

			}

			@Override
			public?boolean?onFling(MotionEvent?e1,?MotionEvent?e2,?float?velocityX,?float?velocityY)?{
				//?TODO?Auto-generated?method?stub
				int?dir?=?getDirByGes(e1.getX(),?e1.getY(),?e2.getX(),?e2.getY());
				//?Toast.makeText(MainActivity.this,?""?+?dir,
				//?Toast.LENGTH_SHORT).show();
				changeByDir(dir);
				return?false;
			}

			@Override
			public?boolean?onDown(MotionEvent?e)?{
				//?TODO?Auto-generated?method?stub
				return?false;
			}
		});
		setContentView(R.layout.activity_main);
		iv_game_arr?=?new?ImageView[rowsNum][colsNum];
		//?Bitmap?bigBm?=(
		//?(BitmapDrawable)getResources().getDrawable(R.drawable.pic_1)).getBitmap();
		//?獲取一張大圖
		Bitmap?bigBm?=?BitmapFactory.decodeResource(getResources(),?R.drawable.pic_1);
		//?計算每個小方塊的寬和高
		int?tuWandH?=?bigBm.getWidth()?/?colsNum;
		//?初始化游戲小方塊
		for?(int?i?=?0;?i?<?rowsNum;?i++)?{
			for?(int?j?=?0;?j?<?colsNum;?j++)?{
				Bitmap?bm?=?Bitmap.createBitmap(bigBm,?j?*?tuWandH,?i?*?tuWandH,?tuWandH,?tuWandH);
				iv_game_arr[i][j]?=?new?ImageView(this);
				iv_game_arr[i][j].setImageBitmap(bm);
				//?設置方塊之間的間距
				iv_game_arr[i][j].setPadding(2,?2,?2,?2);
				//?綁定自定義的數(shù)據(jù)
				iv_game_arr[i][j].setTag(new?ImageViewData(i,?j,?bm));
				iv_game_arr[i][j].setOnClickListener(new?OnClickListener()?{

					@Override
					public?void?onClick(View?v)?{
						//?TODO?Auto-generated?method?stub
						boolean?flag?=?isNearByNull((ImageView)?v);
						//?Toast.makeText(MainActivity.this,?""?+?flag,
						//?Toast.LENGTH_SHORT).show();
						if?(flag)?{
							changeDataByImageView((ImageView)?v);
						}
					}
				});
			}
		}

		//?初始化游戲主界面，加載若干個小方塊
		gl_main_game?=?(GridLayout)?findViewById(R.id.gl_main_game);
		for?(int?i?=?0;?i?<?rowsNum;?i++)?{
			for?(int?j?=?0;?j?<?colsNum;?j++)?{
				gl_main_game.addView(iv_game_arr[i][j]);
			}
		}

		//?設置最后一個方塊為空
		setNullImageView(iv_game_arr[rowsNum?-?1][colsNum?-?1]);
		randomMove();
		isAnim?=?true;
	}

	/**
	?*?根據(jù)手勢方向獲取與空方塊相鄰的位置，如果存在方塊就進行數(shù)據(jù)交換
	?*?
	?*?@param?dir
	?*/
	public?void?changeByDir(int?dir)?{
		//?獲取空方塊位置
		ImageViewData?data?=?(ImageViewData)?iv_null.getTag();
		//?根據(jù)手勢方向，設置相鄰位置坐標
		int?new_x?=?data.x;
		int?new_y?=?data.y;
		if?(dir?==?1)?{//
			new_x++;
		}?else?if?(dir?==?2)?{
			new_x--;
		}?else?if?(dir?==?3)?{
			new_y++;
		}?else?if?(dir?==?4)?{
			new_y--;
		}
		//?Toast.makeText(MainActivity.this,
		//?data.x+"?::?"+data.y,Toast.LENGTH_SHORT).show();
		//?判斷新坐標是否存在
		if?(new_x?>=?0?&&?new_x?<?rowsNum?&&?new_y?>=?0?&&?new_y?<?colsNum)?{
			//?Toast.makeText(MainActivity.this,
			//?new_x+"?:?"+new_y,Toast.LENGTH_SHORT).show();
			//?存在的話開始移動
			changeDataByImageView(iv_game_arr[new_x][new_y]);
		}

	}

	/**
	?*?手勢的判斷
	?*?
	?*?@param?sx
	?*?@param?sy
	?*?@param?ex
	?*?@param?ey
	?*?@return?上下左右?1?2?3?4
	?*/
	public?int?getDirByGes(float?sx,?float?sy,?float?ex,?float?ey)?{
		//?左右：橫向距離大于豎直距離
		boolean?isLeftOrRight?=?Math.abs(sx?-?ex)?>?Math.abs(sy?-?ey);
		if?(isLeftOrRight)?{//?左右
			//?左?：終點x小于起點x
			boolean?isLeft?=?sx?>?ex;
			if?(isLeft)?{
				return?3;
			}?else?{
				return?4;
			}
		}?else?{//?上下
			//?上：終點y大于起點y
			boolean?isUp?=?sy?>?ey;
			if?(isUp)?{
				return?1;
			}?else?{
				return?2;
			}
		}
	}

	//?隨機打亂順序
	public?void?randomMove()?{
		//?打亂次數(shù)
		for?(int?i?=?0;?i?<?100;?i++)?{
			int?dir?=?(int)?(Math.random()?*?4)?+?1;
			changeByDir(dir);
		}
		//?開始交換，無動畫
	}

	/**
	?*?動畫結束后，交換兩個方塊的數(shù)據(jù)
	?*?
	?*?@param?mImageView
	?*????????????點擊的方塊
	?*/
	public?void?changeDataByImageView(final?ImageView?mImageView)?{
		if?(!isAnim)?{//?不要執(zhí)行動畫，算是首次運行,直接開始交換
			ImageViewData?data1?=?(ImageViewData)?mImageView.getTag();
			ImageViewData?data2?=?(ImageViewData)?iv_null.getTag();
			iv_null.setImageBitmap(data1.imageView);
			data2.imageView?=?data1.imageView;
			data2.p_x?=?data1.p_x;
			data2.p_y?=?data2.p_y;
			//?設置當前點擊的是空方塊
			setNullImageView(mImageView);
			return;
		}
		ImageViewData?nullD?=?(ImageViewData)?iv_null.getTag();
		ImageViewData?mD?=?(ImageViewData)?mImageView.getTag();
		//?Toast.makeText(MainActivity.this,?nullD.x+"?:..?"+mD.x,
		//?Toast.LENGTH_SHORT).show();
		//?Toast.makeText(MainActivity.this,?nullD.y+"?:..?"+mD.y,
		//?Toast.LENGTH_SHORT).show();
		Toast.makeText(MainActivity.this,?mImageView.getX()?+?"?:..?"?+?iv_null.getX(),?Toast.LENGTH_SHORT).show();
		Toast.makeText(MainActivity.this,?mImageView.getY()?+?"?:?"?+?iv_null.getY(),?Toast.LENGTH_SHORT).show();
		//?創(chuàng)建一個動畫，設置放心，移動距離
		TranslateAnimation?translateAnimation?=?null;
		if?(mImageView.getX()?>?iv_null.getX())?{//?在空方塊下面
			//?往上移動
			translateAnimation?=?new?TranslateAnimation(0.1f,?-mImageView.getWidth(),?0.1f,?0.1f);
		}?else?if?(mImageView.getX()?<?iv_null.getX())?{//
			//?下
			translateAnimation?=?new?TranslateAnimation(0.1f,?mImageView.getWidth(),?0.1f,?0.1f);
		}?else?if?(mImageView.getY()?>?iv_null.getY())?{//
			//?左
			translateAnimation?=?new?TranslateAnimation(0.1f,?0.1f,?0.1f,?-mImageView.getWidth());
		}?else?if?(mImageView.getY()?<?iv_null.getY())?{//
			//?右
			translateAnimation?=?new?TranslateAnimation(0.1f,?0.1f,?0.1f,?mImageView.getWidth());
		}
		//?translateAnimation?=?new?TranslateAnimation(0.1f,
		//?mImageView.getWidth(),?0.1f,?0.1f);
		//?設置動畫時長
		translateAnimation.setDuration(70);
		//?設置動畫結束后是否停留
		translateAnimation.setFillAfter(true);
		//?動畫結束后交換數(shù)據(jù)對象
		translateAnimation.setAnimationListener(new?AnimationListener()?{
			@Override
			public?void?onAnimationStart(Animation?animation)?{
			}

			@Override
			public?void?onAnimationRepeat(Animation?animation)?{
			}

			@Override
			public?void?onAnimationEnd(Animation?animation)?{
				mImageView.clearAnimation();
				ImageViewData?data1?=?(ImageViewData)?mImageView.getTag();
				ImageViewData?data2?=?(ImageViewData)?iv_null.getTag();
				iv_null.setImageBitmap(data1.imageView);
				data2.imageView?=?data1.imageView;
				data2.p_x?=?data1.p_x;
				data2.p_y?=?data2.p_y;
				//?設置當前點擊的是空方塊
				setNullImageView(mImageView);
			}
		});
		mImageView.startAnimation(translateAnimation);
	}

	/**
	?*?設置某個方塊為空方塊
	?*?
	?*?@param?imageView
	?*????????????當前需要設置為空的方塊實例
	?*/
	public?void?setNullImageView(ImageView?imageView)?{
		imageView.setImageBitmap(null);
		iv_null?=?imageView;
	}

	/**
	?*?判斷點擊方塊是否和空方塊相鄰
	?*?
	?*?@param?imageView
	?*????????????點擊的方塊
	?*?@return?true:相鄰,false:不相鄰
	?*/
	public?boolean?isNearByNull(ImageView?imageView)?{
		//?點擊方塊和當前空方塊的x或y只差一個單位就是相鄰
		ImageViewData?mNullImageViewData?=?(ImageViewData)?iv_null.getTag();
		ImageViewData?mImageViewData?=?(ImageViewData)?imageView.getTag();
		if?(mNullImageViewData.y?==?mImageViewData.y?&&?mImageViewData.x?+?1?==?mNullImageViewData.x)?{//?點擊方塊在空方塊上面
			return?true;
		}?else?if?(mNullImageViewData.y?==?mImageViewData.y?&&?mImageViewData.x?-?1?==?mNullImageViewData.x)?{//?點擊方塊在空方塊下面
			return?true;
		}?else?if?(mNullImageViewData.y?==?mImageViewData.y?+?1?&&?mImageViewData.x?==?mNullImageViewData.x)?{//?點擊方塊在空方塊左邊
			return?true;
		}?else?if?(mNullImageViewData.y?==?mImageViewData.y?-?1?&&?mImageViewData.x?==?mNullImageViewData.x)?{//?點擊方塊在空方塊右邊
			return?true;
		}
		return?false;
	}

	/**
	?*?小方塊上綁定的數(shù)據(jù)
	?*/
	class?ImageViewData?{
		/**?小方塊的原始位置?**/
		public?int?x?=?0;
		public?int?y?=?0;
		/**?小方塊的圖片?**/
		public?Bitmap?imageView;
		/**?小方塊的當前位置?**/
		public?int?p_x;
		public?int?p_y;

		public?ImageViewData(int?x,?int?y,?Bitmap?imageView)?{
			super();
			this.x?=?x;
			this.y?=?y;
			this.imageView?=?imageView;
			this.p_x?=?x;
			this.p_y?=?y;
		}

	}

}