mem_btn.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_pressed="true" >         
        <shape xmlns:android="http://schemas.android.com/apk/res/android"> 
            <stroke android:width="0dp" android:color="@color/black" />
            <solid android:color="@color/pressed"/>
            <padding android:left="5dp" android:top="5dp" 
                android:right="5dp" android:bottom="5dp" /> 
            <corners android:radius="14dp" /> 
        </shape>    
    </item>

    <item>
        <shape xmlns:android="http://schemas.android.com/apk/res/android"> 
            <stroke android:width="0dp" android:color="@color/black" />
            <solid android:color="#3366CC"/>
            <padding android:left="5dp" android:top="5dp" 
                android:right="5dp" android:bottom="2dp" /> 
            <corners android:radius="14dp" /> 
        </shape>
    </item>

</selector>

以上工作完美。

问题：

我想让用户更改背景颜色：即用户选择的其他颜色，但使用pressed_color，半径保持不变。

在这种情况下，如何以编程方式设置xml中的信息，使得非按下状态的颜色是变量？

谢谢！

Answer 1

感谢Ranjit Pati的参考，以便我可以在正确的轨道上进一步研究并找到StateListDrawable，以下工作完美：

public void set_buttons(int t, int color_idd) 
{
    ShapeDrawable activeDrawable = new ShapeDrawable();
    ShapeDrawable inactiveDrawable = new ShapeDrawable();

    // The corners are ordered top-left, top-right, bottom-right, bottom-left. // For each corner, the array contains 2 values, [X_radius, Y_radius]

    float[] radii = new float[8];
    for (int i = 0; i <= 7; i++) 
    {
        radii[i] =  (int) getResources().getDimension(R.dimen.footer_corners);  
    }
    inactiveDrawable.setShape(new RoundRectShape(radii, null, null));
    inactiveDrawable.getPaint().setColor(color_idd);

    activeDrawable.setShape(new RoundRectShape(radii, null, null));
    activeDrawable.getPaint().setColor( (Color.parseColor ("#008B00")));

    StateListDrawable states = new StateListDrawable();
    states.addState(new int[] {-android.R.attr.state_enabled}, inactiveDrawable);
    states.addState(new int[] {android.R.attr.state_pressed}, activeDrawable);
    btns[t].setBackground(states);
}

Answer 2

如果我的主要问题点正确，这个自定义按钮可以解决您的问题。

public class customButton extends Button{
        int dColor, pColor;
        public customButton(Context context, int defaultColor, final int pressedColor) {
            super(context);
            dColor = defaultColor;
            pColor = pressedColor;
            this.setBackgroundDrawable(getShape(defaultColor));

            this.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    v.setBackgroundDrawable(getShape(pressedColor));

                }
            });
        }

        //A method that return a single color shape with radius corner
        private Drawable getShape(int color){
            GradientDrawable gradientDrawable = new GradientDrawable(GradientDrawable.Orientation.TL_BR, new int[] { color,
                    color, color}); 
            gradientDrawable.setGradientType(GradientDrawable.RECTANGLE);
            float[] f = {1,1,1,1,1,1,1,1}; //set the radius as you like
            gradientDrawable.setCornerRadii(f);

            return gradientDrawable;
        }

        //A method that change the default and pressed color of the button
        public void changeColor(int defaultColor, int pressedColor){
            this.setBackgroundDrawable(getShape(defaultColor));
            pColor = pressedColor;
        }

    }

Android：以编程方式压缩ImageButton的非压缩状态颜色

mem_btn.xml

问题：

2 个答案: