上記のダイアログで背景として使用されている場合は、このビューを使用して画面上に透明な四角形を描くことができます。
public class WindowView extends View {
private static final int LOW_DPI_STATUS_BAR_HEIGHT = 19;
private static final int MEDIUM_DPI_STATUS_BAR_HEIGHT = 25;
private static final int HIGH_DPI_STATUS_BAR_HEIGHT = 38;
Context mContext;
int mHeight, mWidth, mTop, mRight, mLeft, mBottom;
Rect mLeftRect, mRightRect, mTopRect, mBottomRect;
Rect mRect;
Paint mPaint;
View mAnchorView;
Paint mTempPaint1;
public WindowView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public WindowView(Context context) {
this(context, null);
}
public WindowView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mContext = context;
initVariables();
}
boolean mReset = false;
GestureDetector mGestureDetector;
GestureDetector.SimpleOnGestureListener mSimpleOnGestureListener;
private View getView() {
return this;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (mSimpleOnGestureListener == null) {
mSimpleOnGestureListener = new SimpleOnGestureListener() {
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
if (mListener != null && e.getX() >= mRect.left
&& e.getX() <= mRect.right && e.getY() >= mRect.top
&& e.getY() <= mRect.bottom)
mListener.onClick(getView());
return true;
}
};
}
if (mGestureDetector == null) {
mGestureDetector = new GestureDetector(mContext,
mSimpleOnGestureListener);
}
mGestureDetector.onTouchEvent(event);
return true;
}
private void initVariables() {
mPaint = new Paint();
mPaint.setStyle(Style.FILL);
mPaint.setColor(mContext.getResources().getColor(
R.color.tut_transcluscent_bg));
mRect = new Rect();
mTempPaint1 = new Paint(Paint.ANTI_ALIAS_FLAG);
mTempPaint1.setAlpha(64);
mTempPaint1.setColorFilter(new PorterDuffColorFilter(Color.WHITE,
Mode.SRC_IN));
}
OnClickListener mListener;
public void setTransparentBackGroundColor(int color) {
mPaint.setColor(color);
invalidate();
}
@Override
public void setOnClickListener(OnClickListener l) {
mListener = l;
}
public View getAnchorView() {
return mAnchorView;
}
float[] mPaddings;
Rect mAnchorRect;;
public void setAnchorView(View mView, Rect rect, float[] paddings) {
mAnchorRect = rect;
if (mAnchorRect == null)
mAnchorView = mView;
else
mAnchorView = null;
mPaddings = paddings;
requestLayout();
invalidate();
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (mAnchorView != null || mAnchorRect != null)
initView();
mReset = true;
}
boolean mFlagInvalid = false;
Handler mAnrHandler;
public void setHandler(Handler handler) {
mAnrHandler = handler;
}
private int getStatusBarHeight() {
DisplayMetrics displayMetrics = new DisplayMetrics();
((WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay().getMetrics(displayMetrics);
int statusBarHeight;
switch (displayMetrics.densityDpi) {
case DisplayMetrics.DENSITY_HIGH:
statusBarHeight = HIGH_DPI_STATUS_BAR_HEIGHT;
break;
case DisplayMetrics.DENSITY_MEDIUM:
statusBarHeight = MEDIUM_DPI_STATUS_BAR_HEIGHT;
break;
case DisplayMetrics.DENSITY_LOW:
statusBarHeight = LOW_DPI_STATUS_BAR_HEIGHT;
break;
default:
statusBarHeight = MEDIUM_DPI_STATUS_BAR_HEIGHT;
}
return statusBarHeight;
}
public void initView() {
mFlagInvalid = false;
int top = 0, left = 0;
if (mAnchorView != null) {
top = mAnchorView.getTop();
left = mAnchorView.getLeft();
View temp = mAnchorView;
int cnt = 0;
try {
while (((View) temp.getParent()).getId() != android.R.id.content) {
temp = (View) temp.getParent();
int scrolledHeight = 0;
if (temp instanceof ScrollView) {
scrolledHeight = ((ScrollView) temp).getScrollY();
}
top = top + temp.getTop() - scrolledHeight;
left = left + temp.getLeft();
cnt++;
if (cnt > 100) {
if (mAnrHandler != null)
mAnrHandler.sendEmptyMessage(9);
mFlagInvalid = true;
break;
}
}
} catch (Exception e) {
mFlagInvalid = true;
if (mAnrHandler != null)
mAnrHandler.sendEmptyMessage(8);
e.printStackTrace();
}
TypedValue tv = new TypedValue();
if (getContext()
.getTheme()
.resolveAttribute(
VERSION.SDK_INT >= VERSION_CODES.HONEYCOMB ? android.R.attr.actionBarSize
: R.attr.actionBarSize, tv, true)) {
int actionBarHeight = TypedValue.complexToDimensionPixelSize(
tv.data, getResources().getDisplayMetrics());
top = top + actionBarHeight;
}
} else if (mAnchorRect != null) {
}
if (mFlagInvalid)
init(20, 20, 50, 50);
else {
if (mAnchorRect != null) {
init(mAnchorRect.bottom, mAnchorRect.right, mAnchorRect.left,
mAnchorRect.top);
} else
init(mAnchorView.getHeight(), mAnchorView.getWidth(), left, top);
}
}
public void init(int height, int width, int left, int top) {
mWidth = width;
mHeight = height;
mTop = top;
mBottom = top + height;
mLeft = left;
mRight = left + width;
mLeft = (int) (mLeft + mPaddings[0] * mWidth);
mTop = (int) (mTop + mPaddings[1] * mHeight);
mRight = (int) (mRight - mPaddings[2] * mWidth);
mBottom = (int) (mBottom - mPaddings[3] * mHeight);
mRect = new Rect(mLeft, mTop, mRight, mBottom);
invalidate();
}
public Rect getAnchorRect() {
return mRect;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
initOnceOnDraw();
canvas.drawRect(mLeftRect, mPaint);
canvas.drawRect(mTopRect, mPaint);
canvas.drawRect(mRightRect, mPaint);
canvas.drawRect(mBottomRect, mPaint);
canvas.drawRect(mRect, mTempPaint1);
}
private void initOnceOnDraw() {
if (mReset) {
mReset = false;
mTopRect = new Rect(0, 0, getWidth(), mRect.top);
mLeftRect = new Rect(0, mRect.top, mRect.left, mRect.bottom);
mRightRect = new Rect(mRect.right, mRect.top, getWidth(),
mRect.bottom);
mBottomRect = new Rect(0, mRect.bottom, getWidth(), getHeight());
}
}}
メソッドsetAnchorViewは（）これは、私はそれがShowcaseView Libraryを使用してだと思う
"balloon-tooltip"エフェクトの後であっても、私はこの質問を自分自身で直そうとしていました。あなたはこれを行う方法を見つけましたか？私は一度使用される機能のレイアウトをもっと複雑にしたくないと思っています。 – Basic