How to get size of NavigationBar and StatusBar

How to get size of NavigationBar and StatusBar for Android

Transcript

1. How to get size of
   NavigationBar and
   StatusBar
   @magiepooh
   https://github.com/magiepooh/
   AdjustFullScreenLayout
   

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2. About me
   @magiepooh
   @magie_pooh
   Takuma Fujita
   

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3. Company
   AbemaTV, Inc.
   (Cyber Agent, Inc.)
   

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4. How to get size of
   NavigationBar and
   StatusBar
   @magiepooh
   https://github.com/magiepooh/
   AdjustFullScreenLayout
   

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5. 1. Refrection
   

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6. Reflection
   
   24dp
   
   48dp
   
   48dp
   
   42dp
   

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7. Reflection
   // portrait
   resources.getIdentifier("navigation_bar_height",
   "dimen", “android");
   // landscape
   resources.getIdentifier("navigation_bar_height_l
   andscape", "dimen", "android");
   

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8. But …
   • Some device with hardware keyboard return
   wrong size
   • tablet? mobile??
   

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9. 2. Calculate
   

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10. Calculate StatusBar and
    NavigationBar Size
    • getSize
    • getCurrentSizeRange
    • getRealSize(getRawSize)
    

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11. getRealSize
    getSize
    getCurrentSizeRange
    

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12. getRealSize
    getSize
    getCurrentSizeRange
    

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13. NavigationBar Width
    public int getNavigationBarWidth() {
    return getRealSize().x - getDisplaySize().x;
    }
    

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14. NavigationBar Height
    public int getNavigationBarHeight() {

    return getRealSize().y - getDisplaySize().y;

    }
    

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15. StatusBar Height
    public int getStatusBarHeight() {
    Point smallSize = new Point();
    Point largeSize = new Point();
    display.getCurrentSizeRange(smallSize, largeSize);
    // getDisplaySize() = getSize()
    Point displaySize = getDisplaySize();
    if (displaySize.x > displaySize.y) {
    return displaySize.y - smallSize.y;
    } else {
    return displaySize.y - largeSize.y;
    }
    }
    

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16. 3. WindowInsetsCompat
    

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17. private class ApplyInsetsListener implements
    android.support.v4.view.OnApplyWindowInsetsListener {
    @Override
    public WindowInsetsCompat onApplyWindowInsets(View v,
    WindowInsetsCompat insets) {
    if (mLastInsets != insets) {
    mLastInsets = insets;
    }
    return insets;
    }
    }
    

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18. ViewCompat.setOnApplyWindowInsetsListener(view,
    new ApplyInsetsListener());
    

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19. public int getNavigationBarWidth() {
    return mLastInsets == null ? 0 :
    mLastInsets.getSystemWindowInsetRight();
    }
    public int getNavigationBarHeight() {
    return mLastInsets == null ? 0 :
    mLastInsets.getSystemWindowInsetBottom();
    }
    public int getStatusBarHeight() {
    return mLastInsets == null ? 0 :
    mLastInsets.getSystemWindowInsetTop();
    }
    

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20. WTF!!!!
    WindowInsetsCompat is
    very useful class!
    

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21. Thanks for your attention.
    

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