Android畫布drawLine不是全寬

Question

我需要在一個片段中畫一條線。我沒有問題，但我不知道爲什麼這條線有左右邊距（頂部和底部都很好）。

這裏是我的代碼：

@Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     context = container.getContext(); 
     utili = new Utilities(context); 
     View rootView = inflater.inflate(R.layout.statsdepth_layout, container, false); 
     gfxView = (ImageView) rootView.findViewById(R.id.gfxview); 
     int width = context.getResources().getDisplayMetrics().widthPixels; 
     int height = context.getResources().getDisplayMetrics().heightPixels; 
     Log.i("LOGTAG", "W: " + width + " H: " + height); 
     Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); 
     Canvas canvas = new Canvas(bitmap); 

     Paint paint = new Paint(); 
     paint.setColor(Color.rgb(255, 153, 51)); 
     paint.setStrokeWidth(10); 
     int startx = 0; 
     int starty = 90; 
     int endx = width; 
     int endy = 90; 
     canvas.drawLine(startx, starty, endx, endy, paint); 
     gfxView.setImageBitmap(bitmap); 

     return rootView; 
    } 

這裏的XML：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <ImageView 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:id="@+id/gfxview"/> 

</LinearLayout> 

**** *** UPDATE

如下更改佈局，它固定：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

<ImageView 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:id="@+id/gfxview" 
    android:scaleType="matrix"/> 
</LinearLayout> 

這裏是結果（我exp ECT線路全寬度大）

Answer 1

讓您的寬度這樣並嘗試

 Display display = getWindowManager().getDefaultDisplay(); 
width = display.getWidth();