Example usage for android.view View measure

Introduction

In this page you can find the example usage for android.view View measure.

Prototype

public final void measure(int widthMeasureSpec, int heightMeasureSpec) 

Source Link

Document

This is called to find out how big a view should be.

Usage

From source file:com.huewu.pla.lib.internal.PLAListView.java

/**
 * this method is called every time a new child is mesaure.
 * //from  ww w  . j a v a  2s  . c om
 * @param child
 * @param widthMeasureSpec
 * @param heightMeasureSpec
 */
protected void onMeasureChild(final View child, final int position, final int widthMeasureSpec,
        final int heightMeasureSpec) {
    child.measure(widthMeasureSpec, heightMeasureSpec);
}

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From source file:beichen.douban.ui.view.LazyViewPager.java

@Override
public void addView(View child, int index, ViewGroup.LayoutParams params) {
    if (!checkLayoutParams(params)) {
        params = generateLayoutParams(params);
    }//from  w w  w .jav  a  2  s.  com
    final LayoutParams lp = (LayoutParams) params;
    lp.isDecor |= child instanceof Decor;
    if (mInLayout) {
        if (lp != null && lp.isDecor) {
            throw new IllegalStateException("Cannot add pager decor view during layout");
        }
        addViewInLayout(child, index, params);
        child.measure(mChildWidthMeasureSpec, mChildHeightMeasureSpec);
    } else {
        super.addView(child, index, params);
    }

    if (USE_CACHE) {
        if (child.getVisibility() != GONE) {
            child.setDrawingCacheEnabled(mScrollingCacheEnabled);
        } else {
            child.setDrawingCacheEnabled(false);
        }
    }
}

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From source file:com.digreamon.android.widget.SlidingPaneLayout.java

private void setChildMeasure(View child, int maxHeight, int maxWidth) {
    if (child == null)
        return;/*from  ww w .jav  a  2 s .c  o m*/
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();

    int childWidthSpec;
    final int horizontalMargin = lp.leftMargin + lp.rightMargin;
    final int verticalMargin = lp.topMargin + lp.bottomMargin;
    if (lp.width == LayoutParams.WRAP_CONTENT) {
        childWidthSpec = MeasureSpec.makeMeasureSpec(maxWidth - horizontalMargin, MeasureSpec.AT_MOST);
    } else if (lp.width == LayoutParams.MATCH_PARENT) {
        childWidthSpec = MeasureSpec.makeMeasureSpec(maxWidth - horizontalMargin, MeasureSpec.EXACTLY);
    } else {
        childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width, MeasureSpec.EXACTLY);
    }

    int childHeightSpec;
    if (lp.height == LayoutParams.WRAP_CONTENT) {
        childHeightSpec = MeasureSpec.makeMeasureSpec(maxHeight - verticalMargin, MeasureSpec.AT_MOST);
    } else if (lp.height == LayoutParams.MATCH_PARENT) {
        childHeightSpec = MeasureSpec.makeMeasureSpec(maxHeight - verticalMargin, MeasureSpec.EXACTLY);
    } else {
        childHeightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
    }

    child.measure(childWidthSpec, childHeightSpec);
}

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From source file:ca.mymenuapp.ui.widgets.SlidingUpPanelLayout.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    final int widthSize = MeasureSpec.getSize(widthMeasureSpec);
    final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
    final int heightSize = MeasureSpec.getSize(heightMeasureSpec);

    if (widthMode != MeasureSpec.EXACTLY) {
        throw new IllegalStateException("Width must have an exact value or MATCH_PARENT");
    } else if (heightMode != MeasureSpec.EXACTLY) {
        throw new IllegalStateException("Height must have an exact value or MATCH_PARENT");
    }/*from  ww w  . ja v a  2  s.  c om*/

    int layoutHeight = heightSize - getPaddingTop() - getPaddingBottom();
    int panelHeight = mPanelHeight;

    final int childCount = getChildCount();

    if (childCount > 2) {
        Log.e(TAG, "onMeasure: More than two child views are not supported.");
    } else if (getChildAt(1).getVisibility() == GONE) {
        panelHeight = 0;
    }

    // We'll find the current one below.
    mSlideableView = null;
    mCanSlide = false;

    // First pass. Measure based on child LayoutParams width/height.
    for (int i = 0; i < childCount; i++) {
        final View child = getChildAt(i);
        final LayoutParams lp = (LayoutParams) child.getLayoutParams();

        int height = layoutHeight;
        if (child.getVisibility() == GONE) {
            lp.dimWhenOffset = false;
            continue;
        }

        if (i == 1) {
            lp.slideable = true;
            lp.dimWhenOffset = true;
            mSlideableView = child;
            mCanSlide = true;
        } else {
            height -= panelHeight;
        }

        int childWidthSpec;
        if (lp.width == LayoutParams.WRAP_CONTENT) {
            childWidthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.AT_MOST);
        } else if (lp.width == LayoutParams.MATCH_PARENT) {
            childWidthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);
        } else {
            childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width, MeasureSpec.EXACTLY);
        }

        int childHeightSpec;
        if (lp.height == LayoutParams.WRAP_CONTENT) {
            childHeightSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST);
        } else if (lp.height == LayoutParams.MATCH_PARENT) {
            childHeightSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
        } else {
            childHeightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
        }

        child.measure(childWidthSpec, childHeightSpec);
    }

    setMeasuredDimension(widthSize, heightSize);
}

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From source file:com.aidy.bottomdrawerlayout.AllDrawerLayout.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    Log.i(TAG, "onMeasure -- widthMeasureSpec = " + widthMeasureSpec + " -- heightMeasureSpec = "
            + heightMeasureSpec);//ww w  .jav  a  2s .c o  m
    int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    int heightMode = MeasureSpec.getMode(heightMeasureSpec);
    int widthSize = MeasureSpec.getSize(widthMeasureSpec);
    int heightSize = MeasureSpec.getSize(heightMeasureSpec);

    if (widthMode != MeasureSpec.EXACTLY || heightMode != MeasureSpec.EXACTLY) {
        if (isInEditMode()) {
            if (widthMode == MeasureSpec.AT_MOST) {
                widthMode = MeasureSpec.EXACTLY;
            } else if (widthMode == MeasureSpec.UNSPECIFIED) {
                widthMode = MeasureSpec.EXACTLY;
                widthSize = 300;
            }
            if (heightMode == MeasureSpec.AT_MOST) {
                heightMode = MeasureSpec.EXACTLY;
            } else if (heightMode == MeasureSpec.UNSPECIFIED) {
                heightMode = MeasureSpec.EXACTLY;
                heightSize = 300;
            }
        } else {
            throw new IllegalArgumentException("DrawerLayout must be measured with MeasureSpec.EXACTLY.");
        }
    }

    setMeasuredDimension(widthSize, heightSize);

    // Gravity value for each drawer we've seen. Only one of each permitted.
    int foundDrawers = 0;
    final int childCount = getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = getChildAt(i);

        if (child.getVisibility() == GONE) {
            continue;
        }

        final LayoutParams lp = (LayoutParams) child.getLayoutParams();

        if (isContentView(child)) {
            // Content views get measured at exactly the layout's size.
            final int contentWidthSpec = MeasureSpec.makeMeasureSpec(widthSize - lp.leftMargin - lp.rightMargin,
                    MeasureSpec.EXACTLY);
            final int contentHeightSpec = MeasureSpec
                    .makeMeasureSpec(heightSize - lp.topMargin - lp.bottomMargin, MeasureSpec.EXACTLY);
            child.measure(contentWidthSpec, contentHeightSpec);
        } else if (isDrawerView(child)) {
            final int childGravity = getDrawerViewAbsoluteGravity(child) & Gravity.HORIZONTAL_GRAVITY_MASK;
            if ((foundDrawers & childGravity) != 0) {
                throw new IllegalStateException(
                        "Child drawer has absolute gravity " + gravityToString(childGravity) + " but this "
                                + TAG + " already has a " + "drawer view along that edge");
            }
            final int drawerWidthSpec = getChildMeasureSpec(widthMeasureSpec,
                    mMinDrawerMargin + lp.leftMargin + lp.rightMargin, lp.width);
            final int drawerHeightSpec = getChildMeasureSpec(heightMeasureSpec,
                    mMinDrawerMargin + lp.topMargin + lp.bottomMargin, lp.height);
            child.measure(drawerWidthSpec, drawerHeightSpec);
        } else {
            throw new IllegalStateException("Child " + child + " at index " + i
                    + " does not have a valid layout_gravity - must be Gravity.LEFT, "
                    + "Gravity.RIGHT or Gravity.NO_GRAVITY");
        }
    }
}

---

From source file:com.huewu.pla.lib.internal.PLA_ListView.java

/**
 * this method is called every time a new child is mesaure.
 * /*from   w w w.j  a va2 s  .c  o m*/
 * @param child
 * @param widthMeasureSpec
 * @param heightMeasureSpec
 */
protected void onMeasureChild(View child, int position, int widthMeasureSpec, int heightMeasureSpec) {
    child.measure(widthMeasureSpec, heightMeasureSpec);
}

---

From source file:com.android.leanlauncher.Workspace.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);

    if (getChildCount() == 0) {
        return;// w ww.  j a va2s . c o m
    }

    // We measure the dimensions of the PagedView to be larger than the pages so that when we
    // zoom out (and scale down), the view is still contained in the parent
    int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    int widthSize = MeasureSpec.getSize(widthMeasureSpec);
    int heightMode = MeasureSpec.getMode(heightMeasureSpec);
    int heightSize = MeasureSpec.getSize(heightMeasureSpec);

    if (widthMode == MeasureSpec.UNSPECIFIED || heightMode == MeasureSpec.UNSPECIFIED) {
        return;
    }

    // Return early if we aren't given a proper dimension
    if (widthSize <= 0 || heightSize <= 0) {
        return;
    }

    mViewPort.set(0, 0, widthSize, heightSize);

    Log.d(TAG, "Workspace.onMeasure(): " + widthSize + ", " + heightSize);

    // disallowing padding in paged view (just pass 0)
    final View child = getChildAt(0);
    if (child.getVisibility() != GONE) {
        final int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);
        final int childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(heightSize, MeasureSpec.EXACTLY);
        child.measure(childWidthMeasureSpec, childHeightMeasureSpec);
    }
    setMeasuredDimension(widthSize, heightSize);
}

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From source file:cn.zy.ef.widget.VerticalViewPager.java

@Override
public void addView(View child, int index, ViewGroup.LayoutParams params) {
    if (!checkLayoutParams(params)) {
        params = generateLayoutParams(params);
    } /* end of if */
    final LayoutParams lp = (LayoutParams) params;
    lp.isDecor |= child instanceof Decor;
    if (mInLayout) {
        if (lp != null && lp.isDecor) {
            throw new IllegalStateException("Cannot add pager decor view during layout");
        } /* end of if */
        addViewInLayout(child, index, params);
        child.measure(mChildWidthMeasureSpec, mChildHeightMeasureSpec);
    } else {//from ww w. j a v  a2s. c om
        super.addView(child, index, params);
    } /* end of if */

    if (USE_CACHE) {
        if (child.getVisibility() != GONE) {
            child.setDrawingCacheEnabled(mScrollingCacheEnabled);
        } else {
            child.setDrawingCacheEnabled(false);
        } /* end of if */
    } /* end of if */
}

---

From source file:com.akshay.protocol10.asplayer.widget.SlidingUpPanelLayout.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    final int widthSize = MeasureSpec.getSize(widthMeasureSpec);
    final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
    final int heightSize = MeasureSpec.getSize(heightMeasureSpec);

    if (widthMode != MeasureSpec.EXACTLY) {
        throw new IllegalStateException("Width must have an exact value or MATCH_PARENT");
    } else if (heightMode != MeasureSpec.EXACTLY) {
        throw new IllegalStateException("Height must have an exact value or MATCH_PARENT");
    }/*from  w  ww  .  ja  va2 s . com*/

    final int childCount = getChildCount();

    if (childCount != 2) {
        throw new IllegalStateException("Sliding up panel layout must have exactly 2 children!");
    }

    mMainView = getChildAt(0);
    mSlideableView = getChildAt(1);
    if (mDragView == null) {
        setDragView(mSlideableView);
    }

    // If the sliding panel is not visible, then put the whole view in the
    // hidden state
    if (mSlideableView.getVisibility() == GONE) {
        mSlideState = SlideState.HIDDEN;
    }

    int layoutHeight = heightSize - getPaddingTop() - getPaddingBottom();

    // First pass. Measure based on child LayoutParams width/height.
    for (int i = 0; i < childCount; i++) {
        final View child = getChildAt(i);
        final LayoutParams lp = (LayoutParams) child.getLayoutParams();

        // We always measure the sliding panel in order to know it's height
        // (needed for show panel)
        if (child.getVisibility() == GONE && i == 0) {
            continue;
        }

        int height = layoutHeight;
        if (child == mMainView && !mOverlayContent && mSlideState != SlideState.HIDDEN) {
            height -= mPanelHeight;
        }

        int childWidthSpec;
        if (lp.width == LayoutParams.WRAP_CONTENT) {
            childWidthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.AT_MOST);
        } else if (lp.width == LayoutParams.MATCH_PARENT) {
            childWidthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);
        } else {
            childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width, MeasureSpec.EXACTLY);
        }

        int childHeightSpec;
        if (lp.height == LayoutParams.WRAP_CONTENT) {
            childHeightSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST);
        } else if (lp.height == LayoutParams.MATCH_PARENT) {
            childHeightSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
        } else {
            childHeightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
        }

        child.measure(childWidthSpec, childHeightSpec);

        if (child == mSlideableView) {
            mSlideRange = mSlideableView.getMeasuredHeight() - mPanelHeight;
        }
    }

    setMeasuredDimension(widthSize, heightSize);
}

---

From source file:administrator.example.com.myscrollview.VerticalViewPager.java

@Override
public void addView(View child, int index, ViewGroup.LayoutParams params) {
    if (!checkLayoutParams(params)) {
        params = generateLayoutParams(params);
    } /* end of if */
    final LayoutParams lp = (LayoutParams) params;
    lp.isDecor |= child instanceof Decor;
    if (mInLayout) {
        if (lp != null && lp.isDecor) {
            throw new IllegalStateException("Cannot add pager decor view during layout");
        } /* end of if */
        addViewInLayout(child, index, params);
        child.measure(mChildWidthMeasureSpec, mChildHeightMeasureSpec);
    } else {//from www.j a  v  a  2 s . c  o m
        //            super.removeAllViews();      //?
        super.addView(child, index, params);
    } /* end of if */

    if (USE_CACHE) {
        if (child.getVisibility() != GONE) {
            child.setDrawingCacheEnabled(mScrollingCacheEnabled);
        } else {
            child.setDrawingCacheEnabled(false);
        } /* end of if */
    } /* end of if */
}

---

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