如何更改 StateListDrawable 中的颜色? [英] How can I change colors in my StateListDrawable?
本文介绍了如何更改 StateListDrawable 中的颜色?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有以下按钮选择器(有 2 个状态,常规和按下):
I have the following selector for a button (with 2 states, regular and pressed):
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" >
<shape>
<solid
android:color="#3498DB" />
<stroke
android:width="1dp"
android:color="#2980B9" />
<corners
android:radius="0dp" />
<padding
android:left="12dp"
android:top="12dp"
android:right="12dp"
android:bottom="12dp" />
</shape>
</item>
<item>
<shape>
<solid
android:color="#2980B9" />
<stroke
android:width="1dp"
android:color="#2980B9" />
<corners
android:radius="0dp" />
<padding
android:left="12dp"
android:top="12dp"
android:right="12dp"
android:bottom="12dp" />
</shape>
</item>
</selector>
我的按钮具有以下指定背景作为上述选择器的内容:
My button has the following which specifies the background as the above selector:
<Button
android:id="@+id/button_LaunchShiftsGame"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/ShiftsMode"
android:background="@drawable/selector_Button"
style="@style/Button_Text" />
我需要在 Activity 加载时通过代码访问和更改两种状态的颜色.
I need to access and change the colors for both states from code when the Activity loads.
我该怎么做?
推荐答案
StateListDrawable gradientDrawable = (StateListDrawable) inflatedView.getBackground();
DrawableContainerState drawableContainerState = (DrawableContainerState) gradientDrawable.getConstantState();
Drawable[] children = drawableContainerState.getChildren();
LayerDrawable selectedItem = (LayerDrawable) children[0];
LayerDrawable unselectedItem = (LayerDrawable) children[1];
GradientDrawable selectedDrawable = (GradientDrawable) selectedItem.getDrawable(0);
GradientDrawable unselectedDrawable = (GradientDrawable) unselectedItem.getDrawable(0);
selectedDrawable.setStroke(STORKE_SIZE, NOTIFICATION_COLOR);
unselectedDrawable.setStroke(STORKE_SIZE, NOTIFICATION_COLOR);
我用这个来改变笔画,它很有帮助.
I used this to change the stroke, it can be helpfull.
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