如何透明軟鍵欄和透明狀態欄的高度？

我有一個活動包含一個RecyclerView和兩個透明的狀態欄（包含wifi信號等）和軟鍵欄。當然，RecyclerView中的項目數量是未定義的，我需要第一個具有標準頂部邊界加狀態欄高度，最後一個是標準底部邊界加上軟鍵欄的高度。這是必要的，否則當滾動分別位於頂部或底部時，我會得到由條部分覆蓋的第一個和最後一個條目。如何透明軟鍵欄和透明狀態欄的高度？

這裏的如何我編程處理利潤率示例代碼：

DisplayMetrics metrics = new DisplayMetrics(); 
     activity.getWindowManager().getDefaultDisplay().getMetrics(metrics); 

     topSpace = new LinearLayout.LayoutParams(
       LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT); 
     bottomSpace = new LinearLayout.LayoutParams(
       LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT); 
     standardSpace = new LinearLayout.LayoutParams(
       LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT); 

     topSpace.setMargins( (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics), 
           (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8 + 24, metrics), 
           (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics), 
           (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics)); 

     bottomSpace.setMargins( (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics), 
           (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics), 
           (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics), 
           (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8 + 56, metrics) + 
             getSoftkeysHeight(activity)); 

     standardSpace.setMargins((int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics), 
           (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics), 
           (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics), 
           (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, metrics));

我試圖使用those answers，但他們似乎沒有幫助我，因爲屏幕的繪圖表面確實是整個屏幕...

來源

2017-03-08 Lamberto Basti

您可以使用RecyclerView.ItemDecoration修改具體項目的利潤率。

創建擴展RecyclerView.ItemDecoration類：

public static class SimpleItemDecorator extends RecyclerView.ItemDecoration { 

private int regularMargin; 
private int lastPosition; 
private int statusBarHeight; 
private int navigationBarHeight; 

public SimpleItemDecorator(Activity activity, int recyclerViewItemsCount) { 
    // get the regular margin 
    regularMargin = activity.getResources().getDimensionPixelSize(R.dimen.regularMargin); 

    // determine the last position 
    lastPosition = recyclerViewItemsCount - 1; 

    // get the height of the status bar 
    final Rect rectangle = new Rect(); 
    final Window window = activity.getWindow(); 
    window.getDecorView().getWindowVisibleDisplayFrame(rectangle); 
    statusBarHeight = rectangle.top; 

    // get the height of the navigation bar 
    final int redId = resources.getIdentifier("navigation_bar_height", "dimen", "android"); 
    navigationBarHeight = (redId > 0) ? resources.getDimensionPixelSize(resId) : 0; 

} 

@Override 
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) { 
    // modify the margins 
    final int position = parent.getChildAdapterPosition(view); 
    if (position == 0) { 
     outRect.top = statusBarHeight + regularMargin; 
    } else if (position == lastPosition) { 
     outRect.bottom = navigationBar + regularMargin; 
    } 
}

}

添加創建ItemDecorator到RecyclerView：

final int recyclerViewItemsCount = 6; 
final SimpleItemDecorator itemDecorator = new SimpleItemDecorator(this, recyclerViewItemsCount); 
recyclerView.addItemDecorator(itemDecorator);

來源

2017-03-08 19:59:18

如何透明軟鍵欄和透明狀態欄的高度？

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