Android sets the background image xml's background and java's getDrawable ()

How to Set background images

Xml file settings in the background image:

For any widget, button imageView or layout, add

[Java] android: background = "@ drawable/bg"

 

You can set the background image to bg.

Bg. bnp Paribas are stored in the drawable directory.

The drawable directory stores images shared by the size icons. Drawable-hdpi stores 240 WVGA800 simulators or board pictures. Drawable-mdpi stores the corresponding small image

 

[Java] <ImageView
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: src = "@ drawable/pic"/>

In the same example, you can set the image as pic.png using src.pdf.

 

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Set or change the background image of a widget in java code:

 

[Java] Resources resources = getContext (). getResources ();
Drawable btnDrawable = resources. getDrawable (R. drawable. layout_bg );
Layout. setBackgroundDrawable (btnDrawable );

 

In the program, the background image of layout is dynamically modified and implemented using the setBackgroundDrawable () function. Set the background image to layout_bg.png.

 

Modify the background image of imageView1 to the background image of imageView2:

ImageView2.getDrawable () can obtain the background of Image 2. The value is of the Drawable type.

ImageView1.setImageDrawable (drawable); sets the background image of imageView1.

 

That is:

[Java] imageView1.setImageDrawable (imageView2.getDrawable ());

 

Translated by Zhang