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這篇文章主要介紹“Android中如何實現(xiàn)底圖局部加載移動”,在日常操作中,相信很多人在Android中如何實現(xiàn)底圖局部加載移動問題上存在疑惑,小編查閱了各式資料,整理出簡單好用的操作方法,希望對大家解答”Android中如何實現(xiàn)底圖局部加載移動”的疑惑有所幫助!接下來,請跟著小編一起來學(xué)習(xí)吧!
具體代碼如下:
public class MapMgr { public static MapMgr mapMgr = null; private int map_num = 28; private int b_x = 0; private int b_y = 0; private int width = 0; private int height = 0; private Bitmap bmpView = null; //create by danielinbiti,前提,你圖片確實比屏幕大,如果不比屏幕大,下面注釋行修改一下即可。 public static void init(int width,int height){ if(mapMgr==null){ mapMgr = new MapMgr(width,height); } } public static MapMgr getInstance(){ return mapMgr; } public MapMgr(int width,int height){ this.width = width; this.height = height; Bitmap bmp = PicMgr.getInstance().getBackGroundBitmap(); b_x = (bmp.getWidth()-width)/2;//保證圖片比屏幕大 b_y = (bmp.getHeight()-height)/2; bmpView = Bitmap.createBitmap(bmp, b_x, b_y, width, height); } public void logic(){ } public void mapDown(){ Bitmap bmp = PicMgr.getInstance().getBackGroundBitmap(); if(b_y+height<bmp.getHeight()){ b_y = b_y + bmp.getHeight()/map_num; if(b_y+height>bmp.getHeight()){ b_y = bmp.getHeight() - height; } } bmpView = Bitmap.createBitmap(bmp, b_x, b_y, width, height); } public void mapUp(){ Bitmap bmp = PicMgr.getInstance().getBackGroundBitmap(); if(b_y>0){ b_y = b_y - bmp.getHeight()/map_num; if(b_y<0){ b_y = 0; } } bmpView = Bitmap.createBitmap(bmp, b_x, b_y, width, height); } public void mapLeft(){ Bitmap bmp = PicMgr.getInstance().getBackGroundBitmap(); if(b_x>0){ b_x = b_x - bmp.getWidth()/map_num; if(b_x<0){ b_x = 0; } } bmpView = Bitmap.createBitmap(bmp, b_x, b_y, width, height); } public void mapRight(){ Bitmap bmp = PicMgr.getInstance().getBackGroundBitmap(); if(b_x+width<bmp.getWidth()){ b_x = b_x + bmp.getWidth()/map_num; if(b_x+width>bmp.getWidth()){ b_x = bmp.getHeight() - width; } } bmpView = Bitmap.createBitmap(bmp, b_x, b_y, width, height); } public void draw(Canvas canvas){ Paint paint = new Paint(); if(bmpView!=null){ canvas.drawBitmap(bmpView,0, 0, paint); } } }
調(diào)用
public void onKeyDownDeal(int keyCode){ if(keyCode==KeyEvent.KEYCODE_DPAD_UP){ MapMgr.getInstance().mapUp(); }else if(keyCode==KeyEvent.KEYCODE_DPAD_DOWN){ MapMgr.getInstance().mapDown(); }else if(keyCode==KeyEvent.KEYCODE_DPAD_LEFT){ MapMgr.getInstance().mapLeft(); }else if(keyCode==KeyEvent.KEYCODE_DPAD_RIGHT){ MapMgr.getInstance().mapRight(); } }
到此,關(guān)于“Android中如何實現(xiàn)底圖局部加載移動”的學(xué)習(xí)就結(jié)束了,希望能夠解決大家的疑惑。理論與實踐的搭配能更好的幫助大家學(xué)習(xí),快去試試吧!若想繼續(xù)學(xué)習(xí)更多相關(guān)知識,請繼續(xù)關(guān)注億速云網(wǎng)站,小編會繼續(xù)努力為大家?guī)砀鄬嵱玫奈恼拢?/p>
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