Android中怎么实现底图局部加载移动
短信预约 -IT技能 免费直播动态提醒
今天就跟大家聊聊有关Android中怎么实现底图局部加载移动,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。
具体如下:
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,你图片确实比屏幕大,如果不比屏幕大,下面注释行修改一下即可。 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;//保证图片比屏幕大 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); } }}
调用
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(); }}
看完上述内容,你们对Android中怎么实现底图局部加载移动有进一步的了解吗?如果还想了解更多知识或者相关内容,请关注编程网行业资讯频道,感谢大家的支持。
免责声明:
① 本站未注明“稿件来源”的信息均来自网络整理。其文字、图片和音视频稿件的所属权归原作者所有。本站收集整理出于非商业性的教育和科研之目的,并不意味着本站赞同其观点或证实其内容的真实性。仅作为临时的测试数据,供内部测试之用。本站并未授权任何人以任何方式主动获取本站任何信息。
② 本站未注明“稿件来源”的临时测试数据将在测试完成后最终做删除处理。有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341