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2014/10/16 ¤W¤È 08:19:06
android Programming Glossary: measurespecAndroid Fragment Pager and Custom Page Indicator( ViewPagerIndicator created by Jake Wharton) http://stackoverflow.com/questions/14433281/android-fragment-pager-and-custom-page-indicator-viewpagerindicator-created-by Determines the width of this view @param measureSpec A measureSpec packed into an int @return The width of the view.. Determines the width of this view @param measureSpec A measureSpec packed into an int @return The width of the view honoring constraints.. @return The width of the view honoring constraints from measureSpec private int measureLong int measureSpec int result int specMode..
Authorative way to override onMeasure()? http://stackoverflow.com/questions/7423082/authorative-way-to-override-onmeasure the following methods int resolveSizeAndState int size int measureSpec int childMeasuredState int resolveSize int size int measureSpec.. int childMeasuredState int resolveSize int size int measureSpec While the first is only available on Honeycomb the second is..
onMeasure custom view explanation http://stackoverflow.com/questions/12266899/onmeasure-custom-view-explanation situation . These constraints are packaged up into the MeasureSpec values that are passed into the method. Here is a rough correlation.. like this @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec int desiredWidth 100 int desiredHeight.. protected void onMeasure int widthMeasureSpec int heightMeasureSpec int desiredWidth 100 int desiredHeight 100 int widthMode MeasureSpec.getMode..
Making a ListAdapter-recycleable Resizable View http://stackoverflow.com/questions/14128018/making-a-listadapter-recycleable-resizable-view l t r b if r l 0 b t 0 dimensionsDirty int widthSpec MeasureSpec.makeMeasureSpec r l MeasureSpec.EXACTLY messageView.setVisibility.. r l 0 b t 0 dimensionsDirty int widthSpec MeasureSpec.makeMeasureSpec r l MeasureSpec.EXACTLY messageView.setVisibility GONE measure.. int widthSpec MeasureSpec.makeMeasureSpec r l MeasureSpec.EXACTLY messageView.setVisibility GONE measure widthSpec MeasureSpec.UNSPECIFIED..
measuring a view before rendering it http://stackoverflow.com/questions/2827079/measuring-a-view-before-rendering-it will return 0 before this point. You will have to supply MeasureSpec s to measure .. that will vary depending on your needs. The.. to measure .. that will vary depending on your needs. The MeasureSpecs that allow the children to impose any constraints themselves.. to impose any constraints themselves look like int widthMeasureSpec MeasureSpec.makeMeasureSpec some width MeasureSpec.EXACTLY int..
Line-breaking widget layout for Android http://stackoverflow.com/questions/549451/line-breaking-widget-layout-for-android context attrs @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec assert MeasureSpec.getMode widthMeasureSpec.. protected void onMeasure int widthMeasureSpec int heightMeasureSpec assert MeasureSpec.getMode widthMeasureSpec MeasureSpec.UNSPECIFIED.. int widthMeasureSpec int heightMeasureSpec assert MeasureSpec.getMode widthMeasureSpec MeasureSpec.UNSPECIFIED final int width..
Authorative way to override onMeasure()? http://stackoverflow.com/questions/7423082/authorative-way-to-override-onmeasure For example Professional Android Development uses MeasureSpec to calculate the dimensions then ends with a call to setMeasuredDimension.. . For example @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec int parentWidth MeasureSpec.getSize widthMeasureSpec.. protected void onMeasure int widthMeasureSpec int heightMeasureSpec int parentWidth MeasureSpec.getSize widthMeasureSpec int parentHeight..
Android Fragment Pager and Custom Page Indicator( ViewPagerIndicator created by Jake Wharton) http://stackoverflow.com/questions/14433281/android-fragment-pager-and-custom-page-indicator-viewpagerindicator-created-by measureShort widthMeasureSpec measureLong heightMeasureSpec Determines the width of this view @param measureSpec A measureSpec packed into an int @return The width of the view honoring constraints from measureSpec private int measureLong.. measureShort widthMeasureSpec measureLong heightMeasureSpec Determines the width of this view @param measureSpec A measureSpec packed into an int @return The width of the view honoring constraints from measureSpec private int measureLong int measureSpec.. this view @param measureSpec A measureSpec packed into an int @return The width of the view honoring constraints from measureSpec private int measureLong int measureSpec int result int specMode MeasureSpec.getMode measureSpec int specSize MeasureSpec.getSize..
Authorative way to override onMeasure()? http://stackoverflow.com/questions/7423082/authorative-way-to-override-onmeasure and easy way to resolve your desired size is to use one of the following methods int resolveSizeAndState int size int measureSpec int childMeasuredState int resolveSize int size int measureSpec While the first is only available on Honeycomb the second.. following methods int resolveSizeAndState int size int measureSpec int childMeasuredState int resolveSize int size int measureSpec While the first is only available on Honeycomb the second is available on all versions. Note You may find that resizeWidth..
onMeasure custom view explanation http://stackoverflow.com/questions/12266899/onmeasure-custom-view-explanation differently in a match_parent situation than a wrap_content situation . These constraints are packaged up into the MeasureSpec values that are passed into the method. Here is a rough correlation of the mode values EXACTLY means the layout_width or.. provide an implementation even if it is as simple as something like this @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec int desiredWidth 100 int desiredHeight 100 int widthMode MeasureSpec.getMode widthMeasureSpec int.. even if it is as simple as something like this @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec int desiredWidth 100 int desiredHeight 100 int widthMode MeasureSpec.getMode widthMeasureSpec int widthSize MeasureSpec.getSize..
Making a ListAdapter-recycleable Resizable View http://stackoverflow.com/questions/14128018/making-a-listadapter-recycleable-resizable-view boolean changed int l int t int r int b super.onLayout changed l t r b if r l 0 b t 0 dimensionsDirty int widthSpec MeasureSpec.makeMeasureSpec r l MeasureSpec.EXACTLY messageView.setVisibility GONE measure widthSpec MeasureSpec.UNSPECIFIED condensedHeight.. int l int t int r int b super.onLayout changed l t r b if r l 0 b t 0 dimensionsDirty int widthSpec MeasureSpec.makeMeasureSpec r l MeasureSpec.EXACTLY messageView.setVisibility GONE measure widthSpec MeasureSpec.UNSPECIFIED condensedHeight getMeasuredHeight.. r int b super.onLayout changed l t r b if r l 0 b t 0 dimensionsDirty int widthSpec MeasureSpec.makeMeasureSpec r l MeasureSpec.EXACTLY messageView.setVisibility GONE measure widthSpec MeasureSpec.UNSPECIFIED condensedHeight getMeasuredHeight messageView.setVisibility..
measuring a view before rendering it http://stackoverflow.com/questions/2827079/measuring-a-view-before-rendering-it measure has been called which in turn calls onMeasure they will return 0 before this point. You will have to supply MeasureSpec s to measure .. that will vary depending on your needs. The MeasureSpecs that allow the children to impose any constraints.. 0 before this point. You will have to supply MeasureSpec s to measure .. that will vary depending on your needs. The MeasureSpecs that allow the children to impose any constraints themselves look like int widthMeasureSpec MeasureSpec.makeMeasureSpec.. on your needs. The MeasureSpecs that allow the children to impose any constraints themselves look like int widthMeasureSpec MeasureSpec.makeMeasureSpec some width MeasureSpec.EXACTLY int heightMeasureSpec MeasureSpec.makeMeasureSpec some height..
Line-breaking widget layout for Android http://stackoverflow.com/questions/549451/line-breaking-widget-layout-for-android PredicateLayout Context context AttributeSet attrs super context attrs @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec assert MeasureSpec.getMode widthMeasureSpec MeasureSpec.UNSPECIFIED final int width MeasureSpec.getSize.. context AttributeSet attrs super context attrs @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec assert MeasureSpec.getMode widthMeasureSpec MeasureSpec.UNSPECIFIED final int width MeasureSpec.getSize widthMeasureSpec.. attrs super context attrs @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec assert MeasureSpec.getMode widthMeasureSpec MeasureSpec.UNSPECIFIED final int width MeasureSpec.getSize widthMeasureSpec The next line is WRONG..
Authorative way to override onMeasure()? http://stackoverflow.com/questions/7423082/authorative-way-to-override-onmeasure correct way of overriding onMeasure I've seen various approaches. For example Professional Android Development uses MeasureSpec to calculate the dimensions then ends with a call to setMeasuredDimension . For example @Override protected void onMeasure.. the dimensions then ends with a call to setMeasuredDimension . For example @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec int parentWidth MeasureSpec.getSize widthMeasureSpec int parentHeight MeasureSpec.getSize heightMeasureSpec.. with a call to setMeasuredDimension . For example @Override protected void onMeasure int widthMeasureSpec int heightMeasureSpec int parentWidth MeasureSpec.getSize widthMeasureSpec int parentHeight MeasureSpec.getSize heightMeasureSpec this.setMeasuredDimension..
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