我正在创建一个楼层地图，其中包含n个带增量值的动态按钮，并添加到自定义相对布局中。现在我需要为添加到视图的每个按钮创建onclicklistner。如何获取id或某些唯一值来标识单击哪个按钮。有人可以帮我这个，我在过去的10天里打破了我的头脑。提前谢谢。
这是我的自定义相对布局：
public class InteractiveView extends RelativeLayout implements OnClickListener{
Matrix matrix = new Matrix();
private float mPositionX = 0;
private float mPositionY = 0;
private float mScale = 0.1f;
private Context context;
private boolean canvasFlag = true;
public InteractiveView(Context context) {
super(context);
this.context = context;
this.setWillNotDraw(false);
// this.setOnTouchListener(mTouchListener);
this.setOnClickListener(this);
}
public void setPosition(float lPositionX, float lPositionY){
mPositionX = lPositionX;
mPositionY = lPositionY;
}
public void setMovingPosition(float lPositionX, float lPositionY){
mPositionX += lPositionX;
mPositionY += lPositionY;
}
public void setScale(float lScale){
mScale = lScale;
}
protected void dispatchDraw(Canvas canvas) {
canvas.save();
// canvas.setMatrix(matrix);
Log.e("Canvas Height ",canvas.getWidth()+" "+canvas.getHeight());
Log.e("Canvas Height ",getWidth() /14 +" "+getHeight()/12 );
Log.e("Canvas Density "," "+canvas.getDensity() );
canvas.translate(mPositionX*mScale, mPositionY*mScale);
canvas.translate(getWidth() / 14,getHeight() / 12);
if (mScale < 0.10)
mScale = 0.1f;
canvas.scale(mScale, mScale);
Log.e("Scale : ",mScale+" ");
super.dispatchDraw(canvas);
canvas.restore();
}
// touch events
private final int NONE = 0;
private final int DRAG = 1;
private final int ZOOM = 2;
private final int CLICK = 3;
// pinch to zoom
private float mOldDist;
private float mNewDist;
private float mScaleFactor = 0.01f;
// position
private float mPreviousX;
private float mPreviousY;
int mode = NONE;
@SuppressWarnings("deprecation")
public OnTouchListener mTouchListener = new OnTouchListener(){
public boolean onTouch(View v, MotionEvent e) {
/*Button button = (Button)v;
Log.e("Button Text : "," "+button.getText().toString());
*/
float x = e.getX();
float y = e.getY();
switch (e.getAction()) {
case MotionEvent.ACTION_DOWN: // one touch: drag
mode = CLICK;
break;
case MotionEvent.ACTION_POINTER_2_DOWN: // two touches: zoom
mOldDist = spacing(e);
mode = ZOOM; // zoom
break;
case MotionEvent.ACTION_UP: // no mode
mode = NONE;
break;
case MotionEvent.ACTION_POINTER_2_UP: // no mode
mode = NONE;
break;
case MotionEvent.ACTION_MOVE: // rotation
if (e.getPointerCount() > 1 && mode == ZOOM) {
/*mNewDist = spacing(e) - mOldDist;
mScale += mNewDist*mScaleFactor;
invalidate();
mOldDist = spacing(e); */
} else if (mode == CLICK || mode == DRAG) {
float dx = (x - mPreviousX)/mScale;
float dy = (y - mPreviousY)/mScale;
setMovingPosition(dx, dy);
invalidate();
mode = DRAG;
}
break;
}
mPreviousX = x;
mPreviousY = y;
return true;
}
};
// finds spacing
private float spacing(MotionEvent event) {
float x = event.getX(0) - event.getX(1);
float y = event.getY(0) - event.getY(1);
return FloatMath.sqrt(x * x + y * y)/4;
}
这是我创建楼层地图的片段类：
public class FloorMapFragment extends Fragment implements OnClickListener {
ViewGroup root;
Button exhibitor;
ZoomControls zoom;
int id = 0;
float dx=0,dy=0,x=0,y=0;
InteractiveView mInteractiveView;
int startX, startY;
boolean isClicked = false;
int unit = 100;
int incremental = 100;
int new_X;
int i;
int new_Width = new_X + incremental;
int new_Y;
int new_Hight = new_Y + incremental;
int leftMargin, topMargin;
int orange = Color.parseColor("#C0680F");
int maroon = Color.parseColor("#5F0C0C");
int pink = Color.parseColor("#F45C91");
int moov = Color.parseColor("#6E4689");
int gray = Color.parseColor("#777777");
int red = Color.parseColor("#E31E26");
int blue = Color.parseColor("#3A53A4");
int green = Color.parseColor("#70BD59");
int cyan = Color.parseColor("#70CDDD");
RelativeLayout r;
// View mainView = null;
// Remember some things for zooming
PointF start = new PointF();
PointF mid = new PointF();
float oldDist = 1f;
PointF oldDistPoint = new PointF();
public static String TAG = "ZOOM";
int mScreenWidth = 0;
int mScreenHeight= 0;
static final int NONE = 0;
static final int DRAG = 1;
static final int ZOOM = 2;
int mode = NONE;
enum Direction {
LEFT, RIGHT, UP, DOWN
};
FloorListner listner;
@SuppressWarnings("deprecation")
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
root = (ViewGroup) inflater.inflate(R.layout.floor_main, null);
// mainView = (RelativeLayout)root.findViewById(R.id.zoom_layout);
r = (RelativeLayout) root.findViewById(R.id.my_relative_layout);
zoom = (ZoomControls)root. findViewById(R.id.zoomControls1);
mScreenWidth = r.getWidth();
/*MainActivity.activity.getResources()
.getDisplayMetrics().widthPixels;*/
mScreenHeight = r.getHeight();
/*MainActivity.activity.getResources()
.getDisplayMetrics().heightPixels; */
RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT,
RelativeLayout.LayoutParams.FILL_PARENT);
layoutParams.height = 75;
layoutParams.width = 57;
// layoutParams.bottomMargin = 100;
// layoutParams.setMargins(0, 0, 0, 100);
// layoutParams.setMargins(-220, 0, 0, 0);
/*ImageView lImageView = new ImageView(MainActivity.activity);
lImageView.setLayoutParams(new RelativeLayout.LayoutParams(-1,-1));
lImageView.setImageResource(R.drawable.transparentimage);;*/
mInteractiveView = new InteractiveView(MainActivity.activity);
// mInteractiveView.setOnClickListener(this);
// mInteractiveView.setOnTouchListener(mTouchListener);
// mInteractiveView.setLayoutParams(new RelativeLayout.LayoutParams(-5,-5 ));
// mInteractiveView.setLayoutParams(layoutParams);
// mInteractiveView.setPosition(-mScreenWidth/2, -mScreenHeight/2);
zoom.setOnZoomInClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
float x = r.getScaleX();
float y = r.getScaleY();
Log.e("Zoon In Listener : ", "X Scale : "+ x );
Log.e("Zoon In Listener : ", "Y Scale : "+ y );
Log.e("Zoon In Width : ", "X Scale : "+ r.getWidth() );
Log.e("Zoon In Height : ", "Y Scale : "+ r.getHeight() );
if (x <= 6.0 && y <= 6.0){
r.setScaleX((float) (x + 0.5));
r.setScaleY((float) (y + 0.5));
}
}
});
zoom.setOnZoomOutClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
float x = r.getScaleX();
float y = r.getScaleY();
Log.e("Zoon Out Listener : ", "X Scale : "+ x );
Log.e("Zoon Out Listener : ", "Y Scale : "+ y );
if (x > 1.0 && y > 1.0){
r.setScaleX((float) (x - 0.5));
r.setScaleY((float) (y - 0.5));
}
}
});
ProgressDialog d = new ProgressDialog(getActivity());
d.setMessage("Loading Map");
d.show();
draw();
d.dismiss();
/*
mInteractiveView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
});*/
/*for( i=0; i<((ViewGroup)mInteractiveView).getChildCount(); ++i) {
View nextChild = ((ViewGroup)mInteractiveView).getChildAt(i);
try {
final Button b = (Button) nextChild;
Log.e("Button Text : ", " : "+b.getText().toString());
b.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int index = ((ViewGroup)b.getParent()).indexOfChild(b);
Log.e("Button get Id : ", ""+v.getTag().toString());
}
});
} catch (Exception e) {
}
}*/
//
// mInteractiveView.addView(lImageView);
// r.setLayoutParams(layoutParams);
r.addView(mInteractiveView);
/* ExhibitorDAO dao = new ExhibitorDAO(getActivity());
workAround(dao, "K19");*/
/* Fragment fragment = new NewsFragment();
FragmentTransaction trans = ;
trans.addToBackStack(null);
trans.replace(R.id.main, fragment);
trans.commit();*/
// r.setOnTouchListener(MyOnTouchListener);
// r.setLayoutParams(layoutParams);
Log.e("Width And Height : ", "Width : "+r.getLayoutParams().width+ " : Height :"+r.getLayoutParams().height);
return root;
}
private OnTouchListener mTouchListener = new OnTouchListener(){
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
isClicked = true;
x = event.getX();
y = event.getY();
dx = x-r.getX();
dy = y-r.getY();
break;
case MotionEvent.ACTION_UP:
if (isClicked){
isClicked = false;
/*Button b = (Button) v;
ExhibitorDAO dao = new ExhibitorDAO(getActivity());
workAround(dao,b.getText().toString());*/
}
break;
case MotionEvent.ACTION_POINTER_UP:
isClicked = false;
break;
case MotionEvent.ACTION_POINTER_DOWN:
isClicked = false;
break;
case MotionEvent.ACTION_MOVE:
r.setX(event.getX()-dx);
r.setY(event.getY()-dy);
isClicked = false;
break;
default:
break;
}
return false;
}
};
private void decreaseXBy(int i) {
new_X = new_X - (2 * i);
}
private void reset() {
new_X = 0;
new_Y += incremental;
;
}
private void drawingH(Direction direction, float width) {
if (direction == direction.RIGHT) {// means go to right direction{
new_X += (incremental * width);
} else if (direction == direction.LEFT) { // means go to left
new_X -= (incremental * width);
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Button b = (Button) v;
ExhibitorDAO dao = new ExhibitorDAO(getActivity());
try{
Exhibitor exhibitor = new Exhibitor();
Log.e("Button Text : ", " : "+b.getText());
if (!b.getText().equals("")) {
Logger.log("floor:");
exhibitor = dao.getExhibitorByBooth(b.getText().toString());
ExhibitorApplication ex = new ExhibitorApplication();
ex.exhibitor = exhibitor;
if (exhibitor != null){
listner.Onfloorclick();
ex.fav_exhibitor = 4 ;
Logger.log("floor:"+ex.exhibitor.Exhibitor_FileNumber);
}
else
{
Logger.log("floor:"+ex.exhibitor.Exhibitor_FileNumber);
}
}
{
Logger.log("floor:no data");
}
}
catch(Exception ex)
{
Toast.makeText(getActivity(), "No Information "+ex.getMessage(), Toast.LENGTH_SHORT).show();
}
}
public Button drawExhibitor(float width, int height, int color,
String label, String fileNumber, Direction d) {
exhibitor = new Button(getActivity());
// exhibitor.setOnClickListener(this);
// exhibitor.setOnTouchListener(MyOnTouchListener);
if (color == Color.BLUE)
exhibitor.setBackgroundColor(Color.parseColor("#56A5EC"));
if (color == Color.WHITE)
exhibitor.setAlpha(0);
else
exhibitor.setBackgroundColor(color);
// exhibitor.setId(id);
// id++;
exhibitor.setText(label);
exhibitor.setTextSize(8);
// exhibitor.setId(foo);
exhibitor.setTag(label);
exhibitor.setTypeface(Typeface.DEFAULT_BOLD);
exhibitor.setGravity(Gravity.CENTER);
exhibitor.setTextColor(Color.WHITE);
/*exhibitor.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Log.e("Button get Id : ", ""+exhibitor.getId());
}
});*/
exhibitor.setOnTouchListener(mTouchListener);
leftMargin = new_X;
topMargin = new_Y;
drawingH(d, width);
InteractiveView.LayoutParams params = new InteractiveView.LayoutParams(
(int) (width * incremental), height * incremental);
params.leftMargin = leftMargin;
params.topMargin = topMargin;
mInteractiveView.addView(exhibitor, params);
params = null;
if (color != Color.WHITE) {
drawingHSpace();
}
return exhibitor;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
if (activity instanceof FloorListner) {
listner = (FloorListner) activity;
} else {
throw new ClassCastException(activity.toString()
+ " must implemenet MyListFragment.OnItemSelectedListener");
}
}
private void drawingHSpace() {
new_X += 2;
}
private void drawingHSpace(float t) {
new_X = (int) (new_X + (2 * t));
}
private void drawingVSpace() {
new_Y += 2;
}
private void removeDrawingVSpace() {
new_Y -= 2;
}
private void decreaseXBy(float i) {
new_X = (int) (new_X - (2 * i));
}
private void drawLabel(float width, int height, int color, int drawable, Direction d) {
// TODO Auto-generated method stub
TextView image = new TextView(getActivity());
//image.setText(label);
image.setBackgroundResource(drawable);
image.setGravity(Gravity.CENTER);
image.setTextSize(20);
image.setTypeface(Typeface.DEFAULT_BOLD);
//image.setTextColor(color);
// image.setOnTouchListener(MyOnTouchListener);
leftMargin = new_X;
topMargin = new_Y;
drawingH(d,width);
InteractiveView.LayoutParams params = new InteractiveView.LayoutParams(
(int)(width * incremental), height * incremental);
params.leftMargin = leftMargin;
params.topMargin = topMargin;
mInteractiveView.addView(image, params);
}
private void drawLabel(float width, int height, int color, String label, Direction d) {
// TODO Auto-generated method stub
TextView image = new TextView(getActivity());
image.setText(label);
image.setGravity(Gravity.CENTER);
image.setTextSize(20);
image.setTypeface(Typeface.DEFAULT_BOLD);
image.setTextColor(color);
// image.setOnTouchListener(mTouchListener);
leftMargin = new_X;
topMargin = new_Y;
drawingH(d,width);
InteractiveView.LayoutParams params = new InteractiveView.LayoutParams(
(int)(width * incremental), height * incremental);
params.leftMargin = leftMargin;
params.topMargin = topMargin;
mInteractiveView.addView(image, params);
}
private void draw() {
drawExhibitor(28.5F, 3, Color.WHITE, "", "", Direction.RIGHT);
drawLabel(2, 3, blue, R.drawable.al_mamzar, Direction.RIGHT);
reset();
reset();
drawExhibitor(16.5F, 1, Color.WHITE, "", "", Direction.RIGHT);
drawLabel(2, 1, blue, R.drawable.business_center, Direction.RIGHT);
drawExhibitor(4.65F, 1, Color.WHITE, "", "", Direction.RIGHT);
drawLabel(1, 1, blue, R.drawable.bath_f, Direction.RIGHT);
drawExhibitor(14F, 1, Color.WHITE, "", "", Direction.RIGHT);
drawLabel(1, 1, blue, R.drawable.bath_m, Direction.RIGHT);
//reset();
reset();
drawingVSpace();
drawingVSpace();
}
}
最后，我将交互式视图添加到相对布局中。
答案 0 :(得分：0)
您可以为每个按钮使用setTag方法来设置ID。然后在onClick方法中，检索该值，并执行与该按钮相关的代码。
一些代码（未经测试）：
private OnClickListener listener = new OnClickListener()
{
@Override
public void onClick(View v)
{
int id = (Integer)v.getTag();
switch (id)
{
case 1: break;
....
}
}
});
for (int i=0 ; i<N ; i++)
{
yourbutton.setTag(Integer.valueOf(i));
yourbutton.setOnClickListener(listener);
}
答案 1 :(得分：0)
正如您在文档中所发现的那样，每个视图都可以拥有一个ID（使用setId (int id)或来自xml android:id）或标记（使用setTag (int key)）并与之相关联您可以通过getId()或getTag()获取该ID或代码。
现在，在您实际检索视图的任何ID之前，您必须通过编程或通过xml为该特定视图设置ID。
如果您没有为视图指定任何ID，并且您正在尝试获取该视图的ID，那么您将获得NO_ID。
根据文档：getId（）返回此视图的标识符。如果视图没有ID，则用于标识视图的正整数或NO_ID。
现在，要解决您的问题，在向视图组添加按钮之前，请为该按钮分配唯一ID。 这里举一个例子来说明：
public class MainActivity extends Activity {
private LinearLayout mRootLayout;
private OnClickListener mOnClickListener = new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Log.e("mButton "," onClick");
Toast.makeText(MainActivity.this, " "+arg0.getId(), Toast.LENGTH_LONG).show();
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRootLayout = (LinearLayout)findViewById(R.id.mRootLayout);
for(int i = 0;i<10;i++){
Button mButton = new Button(this);
mButton.setText("Button "+i);
mButton.setId(i);
if(i<9){
mButton.setOnClickListener(mOnClickListener);
}
mRootLayout.addView(mButton);
}
Button testFindButton = (Button)mRootLayout.findViewById(9);
testFindButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Log.e("testFindButton "," onClick");
Toast.makeText(MainActivity.this, " testFindButton "+v.getId(), Toast.LENGTH_LONG).show();
}
});
}
}