編程調整的FrameLayout

Question

我有類似的東西：

<FrameLayout 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:background="@drawable/photo1" 
      android:orientation="vertical" > 
    <FrameLayout 
       android:id="@+id/photo2" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" > 

    </FrameLayout> 
    <Fragment> 

</Fragment> 
    </FrameLayout> 

我想調整該照片2的FrameLayout。

public void setScreenSize() { 
    Display display = getWindowManager().getDefaultDisplay(); 
    FrameLayout layout = (FrameLayout) findViewById(R.id.photo2); 
    int screen_height = display.getHeight(); 
    screen_height = (int) (0.60*screen_height); 
    LayoutParams parms = (LayoutParams) layout.getLayoutParams(); 
    parms.height = screen_height; 
    } 

不幸的是，這不起作用，我不知道爲什麼。

Answer 1

您是否將高度設置回佈局？

public void setScreenSize() { 
    Display display = getWindowManager().getDefaultDisplay(); 
    FrameLayout layout = (FrameLayout) findViewById(R.id.photo2); 
    int screen_height = display.getHeight(); 
    screen_height = (int) (0.60*screen_height); 
    LayoutParams parms = (LayoutParams) layout.getLayoutParams(); 
    parms.height = screen_height; 
    // Set it back. 
    layout.setLayoutParams(parms); 
} 

Answer 2

如果你想改變FrameLyaout的大小編程然後複製並粘貼此代碼，它的工作100％。

FrameLayout frame1 = (FrameLayout) findViewById(R.id.framelayout1); 
frame1.getLayoutParams().height =460; 
frame1.getLayoutParams().width = 350; 
frame1.requestLayout();