我想创建一个ColorStateList
编程方式使用这样的:
ColorStateList stateList = new ColorStateList(states, colors);
但我不知道是两个参数。
按照文档:
public ColorStateList (int[][] states, int[] colors)
在API级别1
创建返回从状态到颜色指定映射ColorStateList。
可有人请解释我如何建立呢?
什么是二维数组状态的含义?
我想创建一个ColorStateList
编程方式使用这样的:
ColorStateList stateList = new ColorStateList(states, colors);
但我不知道是两个参数。
按照文档:
public ColorStateList (int[][] states, int[] colors)
在API级别1
创建返回从状态到颜色指定映射ColorStateList。
可有人请解释我如何建立呢?
什么是二维数组状态的含义?
见http://developer.android.com/reference/android/R.attr.html#state_above_anchor可用状态的列表。
如果你想设置颜色为残疾人,重点不突出,未选中状态等,只是否定了规定:
int[][] states = new int[][] {
new int[] { android.R.attr.state_enabled}, // enabled
new int[] {-android.R.attr.state_enabled}, // disabled
new int[] {-android.R.attr.state_checked}, // unchecked
new int[] { android.R.attr.state_pressed} // pressed
};
int[] colors = new int[] {
Color.BLACK,
Color.RED,
Color.GREEN,
Color.BLUE
};
ColorStateList myList = new ColorStateList(states, colors);
第一维是状态集合,第二IST状态设定本身的阵列。 的颜色阵列列出的颜色为每个匹配状态集合,因此颜色阵列的长度必须匹配状态阵列的第一维度(或当状态是“已使用”它会崩溃)。 这里和示例:
ColorStateList myColorStateList = new ColorStateList(
new int[][]{
new int[]{android.R.attr.state_pressed}, //1
new int[]{android.R.attr.state_focused}, //2
new int[]{android.R.attr.state_focused, android.R.attr.state_pressed} //3
},
new int[] {
Color.RED, //1
Color.GREEN, //2
Color.BLUE //3
}
);
希望这可以帮助。
编辑例子:一个xml颜色状态列表,如:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:color="@color/white"/>
<item android:color="@color/black"/>
</selector>
是这样的
ColorStateList myColorStateList = new ColorStateList(
new int[][]{
new int[]{android.R.attr.state_pressed},
new int[]{}
},
new int[] {
context.getResources().getColor(R.color.white),
context.getResources().getColor(R.color.black)
}
);
有时,这将是不够的:
int colorInt = getResources().getColor(R.color.ColorVerificaLunes);
ColorStateList csl = ColorStateList.valueOf(colorInt);
遗憾的是没有解决方案为我工作。
ColorStateList themeColorStateList = new ColorStateList(
new int[][]{
new int[]{android.R.attr.state_pressed},
new int[]{android.R.attr.state_enabled},
new int[]{android.R.attr.state_focused, android.R.attr.state_pressed},
new int[]{-android.R.attr.state_enabled},
new int[]{} // this should be empty to make default color as we want
},
new int[]{
pressedFontColor,
defaultFontColor,
pressedFontColor,
disabledFontColor,
defaultFontColor
}
);
这是从源代码构造函数:
/**
* Creates a ColorStateList that returns the specified mapping from
* states to colors.
*/
public ColorStateList(int[][] states, int[] colors) {
mStateSpecs = states;
mColors = colors;
if (states.length > 0) {
mDefaultColor = colors[0];
for (int i = 0; i < states.length; i++) {
if (states[i].length == 0) {
mDefaultColor = colors[i];
}
}
}
}
我的建设者类创建ColorStateList
private class ColorStateListBuilder {
List<Integer> colors = new ArrayList<>();
List<int[]> states = new ArrayList<>();
public ColorStateListBuilder addState(int[] state, int color) {
states.add(state);
colors.add(color);
return this;
}
public ColorStateList build() {
return new ColorStateList(convertToTwoDimensionalIntArray(states),
convertToIntArray(colors));
}
private int[][] convertToTwoDimensionalIntArray(List<int[]> integers) {
int[][] result = new int[integers.size()][1];
Iterator<int[]> iterator = integers.iterator();
for (int i = 0; iterator.hasNext(); i++) {
result[i] = iterator.next();
}
return result;
}
private int[] convertToIntArray(List<Integer> integers) {
int[] result = new int[integers.size()];
Iterator<Integer> iterator = integers.iterator();
for (int i = 0; iterator.hasNext(); i++) {
result[i] = iterator.next();
}
return result;
}
}
例如使用
ColorStateListBuilder builder = new ColorStateListBuilder();
builder.addState(new int[] { android.R.attr.state_pressed }, ContextCompat.getColor(this, colorRes))
.addState(new int[] { android.R.attr.state_selected }, Color.GREEN)
.addState(..., some color);
if(// some condition){
builder.addState(..., some color);
}
builder.addState(new int[] {}, colorNormal); // must add default state at last of all state
ColorStateList stateList = builder.build(); // ColorStateList created here
// textView.setTextColor(stateList);
如果你使用的资源Colors.xml
int[] colors = new int[] {
getResources().getColor(R.color.ColorVerificaLunes),
getResources().getColor(R.color.ColorVerificaMartes),
getResources().getColor(R.color.ColorVerificaMiercoles),
getResources().getColor(R.color.ColorVerificaJueves),
getResources().getColor(R.color.ColorVerificaViernes)
};
ColorStateList csl = new ColorStateList(new int[][]{new int[0]}, new int[]{colors[0]});
example.setBackgroundTintList(csl);
下面是如何创建一个例子ColorList
在科特林编程方式:
val colorList = ColorStateList(
arrayOf(
intArrayOf(-android.R.attr.state_enabled), // Disabled
intArrayOf(android.R.attr.state_enabled) // Enabled
),
intArrayOf(
Color.BLACK, // The color for the Disabled state
Color.RED // The color for the Enabled state
)
)