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：
计算
安全
数据库
网络和加速
企业服务
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，请关注亿速云行业资讯频道，感谢大家的支持。
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