Android处理视图圆角和色彩的工具类

public class DrawCorner {
/**
* 默认绘制圆角函数，背景白色，半径20
* */
public static GradientDrawable drawCorner() {
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadius(20);
drawable.setColor(Color.WHITE);
return drawable;
}
/**
* 默认绘制圆角函数，背景白色
* 参数：
* radius：圆角半径
* */
public static GradientDrawable drawCorner(int radius) {
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadius(radius);
drawable.setColor(Color.WHITE);
return drawable;
}
/**
* 默认绘制圆角函数，背景白色
* 参数：
* radii：四个圆角半径，依次是左上x、左上y、右上x、右上y、右下x、右下y、左下x、左下y
* */
public static GradientDrawable drawCorner(float[] radii) {
if (radii == null || radii.length != 8) {
radii = new float[]{0, 0, 0, 0, 0, 0, 0, 0};
}
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadii(radii);
drawable.setColor(Color.WHITE);
return drawable;
}
/**
* 默认绘制圆角函数
* 参数：
* radius：圆角半径
* color：背景色
* */
public static GradientDrawable drawCorner(int radius, int color) {
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadius(radius);
drawable.setColor(color);
return drawable;
}
/**
* 默认绘制圆角函数
* 参数：
* radii：四个圆角半径，依次是左上x、左上y、右上x、右上y、右下x、右下y、左下x、左下y
* color：背景色
* */
public static GradientDrawable drawCorner(float[] radii, int color) {
if (radii == null || radii.length != 8) {
radii = new float[]{0, 0, 0, 0, 0, 0, 0, 0};
}
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadii(radii);
drawable.setColor(color);
return drawable;
}
/**
* 默认绘制圆角函数
* 参数：
* radius：圆角半径
* colors：渐变背景色
* */
public static GradientDrawable drawCorner(int radius, int[] colors) {
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadius(radius);
drawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
drawable.setColors(colors);
return drawable;
}
/**
* 默认绘制圆角函数
* 参数：
* radii：四个圆角半径，依次是左上x、左上y、右上x、右上y、右下x、右下y、左下x、左下y
* colors：渐变背景色
* */
public static GradientDrawable drawCorner(float[] radii, int[] colors) {
if (radii == null || radii.length != 8) {
radii = new float[]{0, 0, 0, 0, 0, 0, 0, 0};
}
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadii(radii);
drawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
drawable.setColors(colors);
return drawable;
}
/**
* 默认绘制圆角函数
* 参数：
* radius：圆角半径
* colors：渐变背景色
* orientation：渐变类型（ 0：上到下，1：右上到左下，2：右到左，3：右下到左上，4：下到上，5：左下到右上，6：左到右，7：左上到右下 ）
* */
public static GradientDrawable drawCorner(int radius, int[] colors, int orientation) {
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadius(radius);
drawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
switch (orientation) {
case 0:
drawable.setOrientation(GradientDrawable.Orientation.TOP_BOTTOM);
break;
case 1:
drawable.setOrientation(GradientDrawable.Orientation.TR_BL);
break;
case 2:
drawable.setOrientation(GradientDrawable.Orientation.RIGHT_LEFT);
break;
case 3:
drawable.setOrientation(GradientDrawable.Orientation.BR_TL);
break;
case 4:
drawable.setOrientation(GradientDrawable.Orientation.BOTTOM_TOP);
break;
case 5:
drawable.setOrientation(GradientDrawable.Orientation.BL_TR);
break;
case 6:
drawable.setOrientation(GradientDrawable.Orientation.LEFT_RIGHT);
break;
case 7:
drawable.setOrientation(GradientDrawable.Orientation.TL_BR);
break;
}
drawable.setColors(colors);
return drawable;
}
/**
* 默认绘制圆角函数
* 参数：
* radii：四个圆角半径，依次是左上、右上、右下、左下
* colors：渐变背景色
* orientation：渐变类型（ 0：上到下，1：右上到左下，2：右到左，3：右下到左上，4：下到上，5：左下到右上，6：左到右，7：左上到右下 ）
* */
public static GradientDrawable drawCorner(float[] radii, int[] colors, int orientation) {
if (radii == null || radii.length != 8) {
radii = new float[]{0, 0, 0, 0, 0, 0, 0, 0};
}
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadii(radii);
drawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
switch (orientation) {
case 0:
drawable.setOrientation(GradientDrawable.Orientation.TOP_BOTTOM);
break;
case 1:
drawable.setOrientation(GradientDrawable.Orientation.TR_BL);
break;
case 2:
drawable.setOrientation(GradientDrawable.Orientation.RIGHT_LEFT);
break;
case 3:
drawable.setOrientation(GradientDrawable.Orientation.BR_TL);
break;
case 4:
drawable.setOrientation(GradientDrawable.Orientation.BOTTOM_TOP);
break;
case 5:
drawable.setOrientation(GradientDrawable.Orientation.BL_TR);
break;
case 6:
drawable.setOrientation(GradientDrawable.Orientation.LEFT_RIGHT);
break;
case 7:
drawable.setOrientation(GradientDrawable.Orientation.TL_BR);
break;
}
drawable.setColors(colors);
return drawable;
}
}

View.setBackground(DrawCorner.drawCorner);

TextView textView = findViewById(R.id.test);
textView.setBackground(DrawCorner.drawCorner());