我完全按照http://www.lukehorvat.com/blog/android-seekbardialogpreference中说明的方式实现了DialogPreference
另外,我能够更改DialogPreference的文本和分隔符颜色,但是当按钮被按下时,我无法更改其突出显示颜色.有人知道怎么做这个吗?
更新:
我对DialogPreference使用以下布局:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/text_dialog_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="6dip"
android:paddingLeft="12dip"
android:paddingRight="12dip"/>
<TextView
android:id="@+id/text_progress"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="6dip"
android:gravity="center_horizontal"/>
<SeekBar
android:id="@+id/seek_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="6dip"
android:layout_marginTop="6dip"/>
</LinearLayout>
到目前为止,与该DialogPreference或我更改的布局有关的唯一样式属性是通过编程方式更改的:
int alertTitleId = this.getContext().getResources().getIdentifier("alertTitle", "id", "android");
TextView alertTitle = (TextView) getDialog().getWindow().getDecorView().findViewById(alertTitleId);
alertTitle.setTextColor(color); // change title text color
int titleDividerId = this.getContext().getResources().getIdentifier("titleDivider", "id", "android");
View titleDivider = getDialog().getWindow().getDecorView().findViewById(titleDividerId);
titleDivider.setBackgroundColor(color); // change divider color
解决方法:
您需要做的只是DialogPreference的子类,然后调用Resource.getIdentifier来定位要主题化的每个View,就像您在做的一样,但是您不需要调用Window.getDecorView.这是一个例子:
自定义DialogPreference
public class CustomDialogPreference extends DialogPreference {
public CustomDialogPreference(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public CustomDialogPreference(Context context, AttributeSet attrs) {
super(context, attrs);
}
/**
* {@inheritDoc}
*/
@Override
protected void showDialog(Bundle state) {
super.showDialog(state);
final Resources res = getContext().getResources();
final Window window = getDialog().getWindow();
final int green = res.getColor(android.R.color.holo_green_dark);
// Title
final int titleId = res.getIdentifier("alertTitle", "id", "android");
final View title = window.findViewById(titleId);
if (title != null) {
((TextView) title).setTextColor(green);
}
// Title divider
final int titleDividerId = res.getIdentifier("titleDivider", "id", "android");
final View titleDivider = window.findViewById(titleDividerId);
if (titleDivider != null) {
titleDivider.setBackgroundColor(green);
}
// Button views
window.findViewById(res.getIdentifier("button1", "id", "android"))
.setBackgroundDrawable(res.getDrawable(R.drawable.your_selector));
window.findViewById(res.getIdentifier("button2", "id", "android"))
.setBackgroundDrawable(res.getDrawable(R.drawable.your_selector));
window.findViewById(res.getIdentifier("button3", "id", "android"))
.setBackgroundDrawable(res.getDrawable(R.drawable.your_selector));
}
}
XML首选项
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
<path_to.CustomDialogPreference
android:dialogMessage="Message"
android:negativeButtonText="Cancel"
android:positiveButtonText="Okay"
android:title="Title" />
</PreferenceScreen>
自定义选择器
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" android:autoMirrored="true">
<item android:drawable="@drawable/your_pressed_drawable" android:state_pressed="true"/>
<item android:drawable="@drawable/your_default_drawable"/>
</selector>
备用选择器
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" android:autoMirrored="true">
<item android:drawable="@color/your_pressed_color" android:state_pressed="true"/>
<item android:drawable="@color/your_default_color/>
</selector>
屏幕截图