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Canvas

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sloop
2016-02-03 01:56:43 +08:00
parent e0e89b3ded
commit 40f2013f22
1 changed files with 4 additions and 0 deletions
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问题/Canvas/Canvas(3).md
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@@ -246,6 +246,7 @@ public void drawPicture (Picture picture, RectF dst)
InputStream is = mContext.getResources().openRawResource(R.drawable.bitmap); InputStream is = mContext.getResources().openRawResource(R.drawable.bitmap);
BitmapDrawable drawable = new BitmapDrawable(is); BitmapDrawable drawable = new BitmapDrawable(is);
Bitmap bitmap = drawable.getBitmap(); Bitmap bitmap = drawable.getBitmap();
is.close();
// 第2种 // 第2种
BitmapDrawable drawable = (BitmapDrawable) mContext.getResources().getDrawable(R.drawable.bitmap); BitmapDrawable drawable = (BitmapDrawable) mContext.getResources().getDrawable(R.drawable.bitmap);
@@ -258,6 +259,7 @@ public void drawPicture (Picture picture, RectF dst)
InputStream is = mContext.getResources().openRawResource(R.raw.bitmap); InputStream is = mContext.getResources().openRawResource(R.raw.bitmap);
BitmapDrawable drawable = new BitmapDrawable(is); BitmapDrawable drawable = new BitmapDrawable(is);
Bitmap bitmap = drawable.getBitmap(); Bitmap bitmap = drawable.getBitmap();
is.close();
``` ```
**assets:** **assets:**
@@ -267,6 +269,7 @@ public void drawPicture (Picture picture, RectF dst)
InputStream is = mContext.getAssets().open("bitmap.png"); InputStream is = mContext.getAssets().open("bitmap.png");
BitmapDrawable drawable = new BitmapDrawable(is); BitmapDrawable drawable = new BitmapDrawable(is);
bitmap = drawable.getBitmap(); bitmap = drawable.getBitmap();
is.close();
} catch (IOException e) { } catch (IOException e) {
e.printStackTrace(); e.printStackTrace();
} }
@@ -284,6 +287,7 @@ public void drawPicture (Picture picture, RectF dst)
// 此处省略了获取网络输入流的代码 // 此处省略了获取网络输入流的代码
BitmapDrawable drawable = new BitmapDrawable(is); BitmapDrawable drawable = new BitmapDrawable(is);
Bitmap bitmap = drawable.getBitmap(); Bitmap bitmap = drawable.getBitmap();
is.close();
``` ```
> **注意：由于网络涉及的内容比较多，例如访问延时，读取延时，不能在主线程运行，异步回调，http与https，网速影响等等等一系列问题，不是本文在重点，故略过，有兴趣请自行查阅。** > **注意：由于网络涉及的内容比较多，例如访问延时，读取延时，不能在主线程运行，异步回调，http与https，网速影响等等等一系列问题，不是本文在重点，故略过，有兴趣请自行查阅。**