Android 缩放和收缩相对长度
我是android开发新手,抱歉,如果我问了一些愚蠢的问题,请尝试帮助我。我正在尝试实现缩放和收缩的相对性。我想制作我自己的地图视图,在其中我将获得楼层地图的图像并在其上绘制图钉(ImageVIew)。我已经试过了,但我目前无法点击引脚。我在这些帖子的帮助下完成了代码 及 我的代码是Android 缩放和收缩相对长度,android,android-layout,pinchzoom,Android,Android Layout,Pinchzoom,我是android开发新手,抱歉,如果我问了一些愚蠢的问题,请尝试帮助我。我正在尝试实现缩放和收缩的相对性。我想制作我自己的地图视图,在其中我将获得楼层地图的图像并在其上绘制图钉(ImageVIew)。我已经试过了,但我目前无法点击引脚。我在这些帖子的帮助下完成了代码 及 我的代码是 public class TempView extends RelativeLayout { private static final int INVALID_POINTER_ID = -1; private
public class TempView extends RelativeLayout {
private static final int INVALID_POINTER_ID = -1;
private Drawable mIcon;
private float mPosX;
private float mPosY;
TempView temp;
private float mLastTouchX;
private float mLastTouchY;
private int mActivePointerId = INVALID_POINTER_ID;
private ScaleGestureDetector mScaleDetector;
private float mScaleFactor = 1.f;
public TempView(Context context) {
this(context, null, 0);
temp = this;
}
public TempView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
temp = this;
}
public TempView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mIcon = context.getResources().getDrawable(R.drawable.ic_launcher);
mIcon.setBounds(0, 0, mIcon.getIntrinsicWidth(), mIcon.getIntrinsicHeight());
temp = this;
mScaleDetector = new ScaleGestureDetector(context, new ScaleListener());
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
// Let the ScaleGestureDetector inspect all events.
mScaleDetector.onTouchEvent(ev);
final int action = ev.getAction();
switch (action & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN: {
final float x = ev.getX();
final float y = ev.getY();
mLastTouchX = x;
mLastTouchY = y;
mActivePointerId = ev.getPointerId(0);
break;
}
case MotionEvent.ACTION_MOVE: {
final int pointerIndex = ev.findPointerIndex(mActivePointerId);
final float x = ev.getX(pointerIndex);
final float y = ev.getY(pointerIndex);
// Only move if the ScaleGestureDetector isn't processing a gesture.
if (!mScaleDetector.isInProgress()) {
final float dx = x - mLastTouchX;
final float dy = y - mLastTouchY;
mPosX += dx;
mPosY += dy;
invalidate();
}
mLastTouchX = x;
mLastTouchY = y;
break;
}
case MotionEvent.ACTION_UP: {
mActivePointerId = INVALID_POINTER_ID;
break;
}
case MotionEvent.ACTION_CANCEL: {
mActivePointerId = INVALID_POINTER_ID;
break;
}
case MotionEvent.ACTION_POINTER_UP: {
final int pointerIndex = (ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK)
>> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
final int pointerId = ev.getPointerId(pointerIndex);
if (pointerId == mActivePointerId) {
// This was our active pointer going up. Choose a new
// active pointer and adjust accordingly.
final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
mLastTouchX = ev.getX(newPointerIndex);
mLastTouchY = ev.getY(newPointerIndex);
mActivePointerId = ev.getPointerId(newPointerIndex);
}
break;
}
}
return true;
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b)
{
int count = getChildCount();
Log.d("onLayout", ""+count);
for(int i=0;i<count;i++){
View child = getChildAt(i);
if(child.getVisibility()!=GONE ){
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams)child.getLayoutParams();
child.layout(
(int)(params.leftMargin * mScaleFactor),
(int)(params.topMargin * mScaleFactor),
(int)((params.leftMargin + child.getMeasuredWidth()) * mScaleFactor),
(int)((params.topMargin + child.getMeasuredHeight()) * mScaleFactor)
);
child.setLayoutParams(params);
}
}
}
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.save(Canvas.MATRIX_SAVE_FLAG);
canvas.translate(mPosX, mPosY);
canvas.scale(mScaleFactor, mScaleFactor);
Log.d("onDraw", ""+mScaleFactor);
int count = getChildCount();
for(int i=0;i<count;i++){
View child = getChildAt(i);
if(child.getVisibility()!=GONE){
child.draw(canvas);
Log.d("onDraw", ""+mScaleFactor);
}
}
canvas.restore();
}
@Override
protected void dispatchDraw(Canvas canvas) {
canvas.save(Canvas.MATRIX_SAVE_FLAG);
canvas.translate(mPosX, mPosY);
canvas.scale(mScaleFactor, mScaleFactor);
super.dispatchDraw(canvas);
canvas.restore();
}
private class ScaleListener extends ScaleGestureDetector.SimpleOnScaleGestureListener {
@Override
public boolean onScale(ScaleGestureDetector detector) {
mScaleFactor *= detector.getScaleFactor();
// Don't let the object get too small or too large.
mScaleFactor = Math.max(1.0f, Math.min(mScaleFactor, 5.0f));
// Log.d("onScale", ""+mScaleFactor);
temp.invalidate();
invalidate();
return true;
}
}
}
公共类TempView扩展了RelativeLayout{
私有静态final int无效\u指针\u ID=-1;
私人可牵引话筒;
私人浮动mPosX;
私家车;
温度视图温度;
私有浮动mLastTouchX;
私密的浮躁和敏感;
private int mActivePointerId=无效的\u指针\u ID;
专用scalegestruedetector mScaleDetector;
私人浮动mScaleFactor=1.f;
公共临时视图(上下文){
这个(上下文,null,0);
温度=这个;
}
公共临时视图(上下文、属性集属性){
这(上下文,属性,0);
温度=这个;
}
公共临时视图(上下文上下文、属性集属性、int-defStyle){
超级(上下文、属性、定义样式);
mIcon=context.getResources().getDrawable(R.drawable.ic_启动器);
setBounds(0,0,mIcon.getIntrinsicWidth(),mIcon.getIntrinsicHeight());
温度=这个;
mScaleDetector=新的scalegestruedetector(上下文,新的ScaleListener());
}
@凌驾
公共事件(MotionEvent ev){
//让scalegestruedetector检查所有事件。
mScaleDetector.onTouchEvent(ev);
final int action=ev.getAction();
开关(动作和动作事件.动作屏蔽){
case MotionEvent.ACTION\u DOWN:{
最终浮点数x=ev.getX();
最终浮动y=ev.getY();
mLastTouchX=x;
mLastTouchY=y;
MacTivePointId=ev.getPointerId(0);
打破
}
case MotionEvent.ACTION\u移动:{
final int pointerIndex=ev.findPointerIndex(mactivePointId);
最终浮动x=ev.getX(指针索引);
最终浮动y=ev.getY(指针索引);
//仅在ScaleGetureDetector未处理手势时移动。
如果(!mScaleDetector.isInProgress()){
最终浮点数dx=x-mLastTouchX;
最终浮子dy=y—最大浮子厚度;
mPosX+=dx;
mPosY+=dy;
使无效();
}
mLastTouchX=x;
mLastTouchY=y;
打破
}
case MotionEvent.ACTION\u UP:{
MacTivePointId=无效的\u指针\u ID;
打破
}
case MotionEvent.ACTION\u取消:{
MacTivePointId=无效的\u指针\u ID;
打破
}
case MotionEvent.ACTION\u指针\u向上:{
final int pointerIndex=(ev.getAction()&MotionEvent.ACTION\u指针\u索引\u掩码)
>>MotionEvent.ACTION\u指针\u索引\u移位;
final int pointerId=ev.getPointerId(pointerIndex);
if(pointerId==MacTivePointId){
//这是我们的活动指针上升。请选择一个新指针
//激活指针并进行相应调整。
final int newPointerIndex=pointerIndex==0?1:0;
mLastTouchX=ev.getX(newPointerIndex);
mLastTouchY=ev.getY(新指针索引);
MacTivePointId=ev.getPointerId(newPointerIndex);
}
打破
}
}
返回true;
}
@凌驾
仅受保护的void布局(布尔值已更改、int l、int t、int r、int b)
{
int count=getChildCount();
Log.d(“onLayout”,即“+”计数);
对于(inti=0;iAndroid视图中类似HTML映射元素的实现:
- 在布局中支持图像作为可绘制或位图
- 允许使用xml格式的区域标记列表
- 允许使用剪切和粘贴HTML区域标记到资源xml(即,能够获取HTML地图和图像,并以最少的编辑使用它)
- 如果图像大于设备屏幕,则支持平移
- 支持收缩缩放
- 当一个区域被点击时支持回调
- 支持将注释显示为气泡文本,并在点击气泡时提供回调
查看此链接,您将获得解决方案您找到任何解决方案了吗?我也找到了problem@DeepakSwami我已经实现了一个解决方案并启动了应用程序,请参见“你能将你的解决方案发布为答案吗?兄弟,你找到任何解决方案了吗?你能发布你的解决方案吗?这里有相同的问题,运气好吗?”?