不推荐使用 setBackoundDrawable()

所以我的 sdk 从15调到21，当我调用 setBackgroundDrawable()时，Android Studio 告诉我它已经过时了。

我想绕过它，用:

int sdk = android.os.Build.VERSION.SDK_INT;


if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
layout.setBackgroundDrawable(getResources().getDrawable(R.drawable.img_wstat_tstorm));
} else {
layout.setBackground(getResources().getDrawable(R.drawable.img_wstat_tstorm));
}

但是，我在“ setContext ()”处得到一个错误。

那么，你会怎么处理呢？

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最佳答案

It's an interesting topic. The way you are doing it is correct, apparently. It is actually just a naming decision change. As this answer points out, setBackground() just calls setBackgroundDrawable():

public void setBackground(Drawable background) {
//noinspection deprecation
setBackgroundDrawable(background);
}


@Deprecated
public void setBackgroundDrawable(Drawable background) { ... }

You can see this thread for more information about all of this.

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You are getting an error because getResources().getDrawable() takes an id (int) not a drawable as its argument. Try this:

layout.setBackground(getResources().getDrawable(R.id.img_wstat_tstorm));

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It's funny because that method is deprecated, but if you look at the Android Source Code you'll find this:

   /**
* Set the background to a given Drawable, or remove the background. If the
* background has padding, this View's padding is set to the background's
* padding. However, when a background is removed, this View's padding isn't
* touched. If setting the padding is desired, please use
* {@link #setPadding(int, int, int, int)}.
*
* @param background The Drawable to use as the background, or null to remove the
*        background
*/
public void setBackground(Drawable background) {
//noinspection deprecation
setBackgroundDrawable(background);
}
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maybe you can try the following:

setBackgroundResource(R.drawable.img_wstat_tstorm);
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I'm using a minSdkVersion 16 and targetSdkVersion 23 The following is working for me, it uses ContextCompat.getDrawable(context, R.drawable.drawable);

Instead of using: layout.setBackground(getResources().getDrawable(R.drawable.img_wstat_tstorm));

Rather use:

layout.setBackground(ContextCompat.getDrawable(getActivity(), R.drawable.img_wstat_tstorm));

getActivity() is used in a fragment, if calling from a activity use this

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This is correct in my case Solve this problem 

 imageView.setBackgroundResource(images[productItem.getPosition()]);
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BitmapDrawable background = new BitmapDrawable(BitmapFactory.decodeResource(getResources(), R.mipmap.Nome_imgem));
getSupportActionBar().setBackgroundDrawable(background);
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//Java
view.setBackground(ActivityCompat.getDrawable(context, R.drawable.bg))


//Kotlin
view.background = ActivityCompat.getDrawable(context, R.drawable.bg)
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Correct as of 15th August 2018

Use the support libraries

Drawable drawable = ResourcesCompat.getDrawable(getResources(), drawableRes, null);
ViewCompat.setBackground(layout, drawable);
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Correct as of 23th November 2018

Kotlin:

view.background = resources.getDrawable(R.drawable.ic_image,theme)

If you include the Theme parameter.

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Use this:

myView.background = ContextCompat.getDrawable(context, R.id.my_drawable)

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