Android activity 平鋪背景圖片

來源:互聯網
上載者:User

發表於09月27日 10:10圖片平鋪的三種方式:

  1)第一種利用系統提供的api實現

   Bitmap bitmap = BitmapFactory.decodeResource(getResources(),R.drawable.pic);   //bitmap = Bitmap.createBitmap(100, 20,Config.ARGB_8888);   BitmapDrawable drawable = new BitmapDrawable(bitmap);   drawable.setTileModeXY(TileMode.REPEAT , TileMode.REPEAT);   drawable.setDither(true);   view.setBackgroundDrawable(drawable);   Bitmap bitmap = BitmapFactory.decodeResource(getResources(),R.drawable.pic);   //bitmap = Bitmap.createBitmap(100, 20,Config.ARGB_8888);   BitmapDrawable drawable = new BitmapDrawable(bitmap);   drawable.setTileModeXY(TileMode.REPEAT , TileMode.REPEAT);   drawable.setDither(true);   view.setBackgroundDrawable(drawable);

  2)第二種我們使用xml來輕鬆實現

   < bitmapxmlns:android="http://schemas.android.com/apk/res/android"android:src="@drawable/img"  android:tileMode="repeat" />

  3)第三種自己畫出來


  public static Bitmap createRepeater(int width,Bitmap src){   int count = (width + src.getWidth() - 1) /src.getWidth();   Bitmap bitmap = Bitmap.createBitmap(width, src.getHeight(),Config.ARGB_8888);   Canvas canvas = new Canvas(bitmap);   for(int idx = 0; idx < count; ++ idx){   canvas.drawBitmap(src, idx * src.getWidth(), 0, null);   }   return bitmap;   }  public static Bitmap createRepeater(int width, Bitmapsrc){int count = (width + src.getWidth() - 1) / src.getWidth();  Bitmap bitmap = Bitmap.createBitmap(width, src.getHeight(),Config.ARGB_8888);  Canvas canvas = new Canvas(bitmap);  for(int idx = 0; idx < count; ++ idx){  canvas.drawBitmap(src, idx * src.getWidth(), 0, null);  }  return bitmap;  }

  前兩種偶爾會出現bug,平鋪有問題,還是最後一種比較使用,呵呵!

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