三星Galaxy Note 3的佈局不同

在我的Android應用程序中，我有一個頁面，我想在該頁面中縮放頁面上相對於屏幕大小的所有對象。爲此我創建了一個自定義佈局。除了1位用戶使用三星Galaxy Note 3外，它在我們測試過的所有設備上都能很好地工作。在該設備上，所有設備的尺寸都過大，並且運行在邊緣，甚至是頂部邊緣。看起來好像佈局本身正在運行在屏幕的邊緣，並在ActionBar選項卡後面。這裏是我的代碼：三星Galaxy Note 3的佈局不同

package org.mesonet.app; 

import android.app.Activity; 
import android.content.Context; 
import android.os.Build; 
import android.util.AttributeSet; 
import android.util.DisplayMetrics; 
import android.util.TypedValue; 
import android.view.View; 
import android.widget.LinearLayout; 
import android.widget.TextView; 



public class ScalableLayout extends LinearLayout 
{ 
    static final int STANDARD_DPI = 160; 
    private float mBaseWidthInches; 
    private float mBaseHeightInches; 

    private float mWidthScale; 
    private float mHeightScale; 
    private float mTextScale; 

    private boolean mFirstMeasure = true; 



    public ScalableLayout(Context context, AttributeSet attrs) 
    { 
     super(context, attrs); 

     TypedValue dimen = new TypedValue(); 
     getResources().getValue(R.dimen.base_width, dimen, true); 
     mBaseWidthInches = dimen.getFloat(); 

     getResources().getValue(R.dimen.base_height, dimen, true); 
     mBaseHeightInches = dimen.getFloat(); 

     DisplayMetrics display = new DisplayMetrics(); 

     ((Activity)context).getWindowManager().getDefaultDisplay().getMetrics(display); 

     float xDpi = display.xdpi; 
     float yDpi = display.ydpi; 

     if(Math.round(xDpi) == STANDARD_DPI) 
      xDpi = display.densityDpi; 
     if(Math.round(yDpi) == STANDARD_DPI) 
      yDpi = display.densityDpi; 

     float currentWidthInches = display.widthPixels/xDpi; 
     float currentHeightInches = display.heightPixels/yDpi; 

     mWidthScale = currentWidthInches/mBaseWidthInches; 
     mHeightScale = currentHeightInches/mBaseHeightInches; 

     mTextScale = (mHeightScale/display.scaledDensity)/getResources().getConfiguration().fontScale; 
    } 



    @Override 
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) 
    { 
     View view; 

     for(int i = 0; i < getChildCount(); i++) 
     { 
      view = getChildAt(i); 

      if(mFirstMeasure) 
      { 
       LayoutParams params = (LayoutParams)view.getLayoutParams(); 
       params.leftMargin *= mWidthScale; 
       params.topMargin *= mHeightScale; 
       params.rightMargin *= mWidthScale; 
       params.bottomMargin *= mHeightScale; 

       if(params.width != LayoutParams.WRAP_CONTENT && params.width != LayoutParams.MATCH_PARENT) 
        params.width *= mWidthScale; 

       if(params.height != LayoutParams.WRAP_CONTENT && params.height != LayoutParams.MATCH_PARENT) 
        params.height *= mHeightScale; 

       if(view instanceof TextView) 
        ((TextView)view).setTextSize(((TextView)view).getTextSize() * mTextScale); 

       view.setLayoutParams(params); 
      } 
     } 

     mFirstMeasure = false; 

     super.onMeasure(widthMeasureSpec, heightMeasureSpec); 
    } 



    @Override 
    protected void onLayout(boolean inChanged, int inLeft, int inTop, int inRight, int inBottom) 
    { 
     if(Build.VERSION.SDK_INT > Build.VERSION_CODES.GINGERBREAD_MR1) 
     { 
      super.onLayout(inChanged, inLeft, inTop, inRight, inBottom); 
      return; 
     } 

     super.onLayout(inChanged, Math.round(inLeft * mWidthScale), Math.round(inTop * mHeightScale), Math.round(inRight * mWidthScale), Math.round(inBottom * mHeightScale)); 
    } 
}

來源

2013-11-26 KairisCharm