如何在RecyclerView中设置自定义形状的ImageButton的背景?

时间:2016-04-03 15:38:00

标签: android android-recyclerview

在recyclerView中,我有一个imageButtons列表,其中自定义形状应用为所有ImageButtons的背景。每个ImageButton目前都有一个颜色列表中的纯色:colors[]

这就是现在的样子:

enter image description here

我想将icon.png放在索引0(棕色按钮)的位置而不是纯色。到目前为止,我已经用了很多天试图找到一个解决方案,但没有任何咒语。

以下是所有相关代码:

这是设置颜色的recyclerView适配器中的代码:

Resources resources = App.getAppContext().getResources();
String colors[] = resources.getStringArray(R.array.backgroundcolors);

@Override
public void onBindViewHolder(ViewHolder holder, int position) {


    Drawable drawable = holder.colorButton.getBackground();

    //This is here where each ImageButton gets a color from the colorlist colors[]

    if (drawable instanceof GradientDrawable) {
        GradientDrawable gd = (GradientDrawable) drawable.getCurrent();
        gd.setColor(Color.parseColor(colors[position]));

        //This does nothing
    } else if (drawable instanceof RippleDrawable) {
        RippleDrawable rd = (RippleDrawable) drawable;
        int color = Color.parseColor(colors[position]);
        rd.setColor(newColorStateList(color));
    }
}

每个imageButton的colorStatList代码:

 private static ColorStateList newColorStateList(int color) {
    int[][] states = new int[][]{

            new int[]{android.R.attr.state_enabled}, // enabled
            new int[]{-android.R.attr.state_enabled}, // disabled
    };

    int[] colors = new int[]{
            color, color
    };
    return new ColorStateList(states, colors);
}

我的RecyclerView适配器的自定义按钮:

public class ColorButton{

private ImageButton button;
private String color;
public static List<ColorButton> colorButtonList;


public ColorButton(ImageButton button, String color) {
    this.button = button;
    this.color = color;
}

static ColorButton colorButton = new ColorButton(new ImageButton(App.getAppContext()), null);

public static List<ColorButton> initColorButtons(){
    colorButtonList = new ArrayList<>();

    Resources resources = App.getAppContext().getResources();
    String colors[] = resources.getStringArray(R.array.backgroundcolors);


    for(int i=0; i<colors.length; i++){

        colorButtonList.add(new ColorButton(new ImageButton(App.getAppContext()), colors[i]));
    }

    return colorButtonList;
}

你可能想知道我为什么String color; 这是用于在用户点击颜色按钮时设置应用的背景颜色:mEditText.setBackgroundColor(Color.parseColor((mColorButtons.get(position).getColor())));

1 个答案:

答案 0 :(得分:3)

试试这个:

@Override
public void onBindViewHolder(ViewHolder holder, int position) { 
if(position ==0){
holder.colorButton.setBackgroundResource(R.drawable.colorpicker2);
}
else
{
GradientDrawable gd = context.getResources().getDrawable(R.drawable.bbshape);
gd.setColor(Color.parseColor(colors[position]));
holder.colorButton.setBackGroundDrawable(gd);
}
}