问题描述
RelativeLayout layout =(RelativeLayout)findViewById(R.id.background);
layout.setBackgroundResource(R.drawable.ready);
时做到这一点的最好方法是什么?
Is the best way to do it?
推荐答案
layout.setBackgroundResource(R.drawable.ready);
是正确的
另一种方式来实现它是使用以下内容:
layout.setBackgroundResource(R.drawable.ready);
is correct.
Another way to achieve it is to use the following:
final int sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
layout.setBackgroundDrawable( getResources().getDrawable(R.drawable.ready) );
} else {
layout.setBackground( getResources().getDrawable(R.drawable.ready));
}
但我认为这个问题的发生是因为你要加载的大图像。照片这里是一个很好的教程如何装入大位图。
But I think the problem occur because you are trying to load big images.
Here is a good tutorial how to load large bitmaps.
更新:
getDrawable(INT)去precated在API级别22
getDrawable(INT)
是pcated在API级别22现在去$ P $。你应该使用下面的code从支持库,而不是:
UPDATE:
getDrawable(int ) deprecated in API level 22 getDrawable(int )
is now deprecated in API level 22.You should use the following code from the support library instead:
ContextCompat.getDrawable(context, R.drawable.ready)
如果你指的来源$ C $ C <一个href="http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/5.0.1_r1/android/support/v4/content/ContextCompat.java#ContextCompat.getDrawable%28android.content.Context%2Cint%29">ContextCompat.getDrawable,它给你这样的东西:
If you refer to the source code of ContextCompat.getDrawable, it gives you something like this:
/**
* Return a drawable object associated with a particular resource ID.
* <p>
* Starting in {@link android.os.Build.VERSION_CODES#LOLLIPOP}, the returned
* drawable will be styled for the specified Context's theme.
*
* @param id The desired resource identifier, as generated by the aapt tool.
* This integer encodes the package, type, and resource entry.
* The value 0 is an invalid identifier.
* @return Drawable An object that can be used to draw this resource.
*/
public static final Drawable getDrawable(Context context, int id) {
final int version = Build.VERSION.SDK_INT;
if (version >= 21) {
return ContextCompatApi21.getDrawable(context, id);
} else {
return context.getResources().getDrawable(id);
}
}
在ContextCompat
由于API 22的,你应该使用 getDrawable(INT,主题)
方法,而不是getDrawable(INT)。
As of API 22, you should use the getDrawable(int, Theme)
method instead of getDrawable(int).
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