我想在对话框中更改按钮的颜色,如下图所示。
使用简单的警报对话框时,我设法完成了这项工作。
AlertDialog.Builder builder = new AlertDialog.Builder(this);
// Set dialog title
builder.setTitle(Html.fromHtml("<font color='#8b0000'>"
+ getResources().getString(R.string.delete_this_list)
+ "?" + "</font>"));
builder.setMessage(getResources().getString(R.string.delete)
+ " '"
+ lists[listNo]
+ "'?\n"
+ getResources().getString(
R.string.delete_this_list_description))
.setCancelable(false)
.setPositiveButton(getResources().getString(R.string.delete),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
//Some background stuff
//.......//
}
})
.setNegativeButton(
getResources().getString(android.R.string.cancel),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
}
});
alertDialog = builder.create();
alertDialog.show();
alertDialog.getButton(DialogInterface.BUTTON_POSITIVE)
.setBackground(getResources().getDrawable(R.drawable.btn_bar_holo_red));
alertDialog.getButton(DialogInterface.BUTTON_NEGATIVE)
.setBackground(getResources().getDrawable(R.drawable.btn_bar_holo_red));
但是,使用DialogFragments时这种方法不起作用。 使用DialogFragments时,没有getButton方法。
任何想法??
答案 0 :(得分:2)
而不是:
alertDialog.getButton(DialogInterface.BUTTON_POSITIVE) 。的的setBackground 强>(getResources()getDrawable(R.drawable.btn_bar_holo_red));
尝试:
alertDialog.setOnShowListener(new DialogInterface.OnShowListener() {
@Override
public void onShow(DialogInterface dialog) {
Button positiveButton = ((AlertDialog) dialog)
.getButton(AlertDialog.BUTTON_POSITIVE);
positiveButton.setBackgroundResource(R.drawable.btn_bar_holo_red_full);
Button negativeButton = ((AlertDialog) dialog)
.getButton(AlertDialog.BUTTON_NEGATIVE);
negativeButton.setBackgroundResource(R.drawable.btn_bar_holo_red_full);
}
});
btn_bar_holo_red_full将在其自己的xml文件中定义,如下所示:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/button_pressed" android:state_pressed="true" />
<item android:drawable="@drawable/button_focused" android:state_focused="true" />
<item android:drawable="@drawable/button_default" />
</selector>
然后按如下方式定义button_pressed,button_focused和button_default(你需要三个,一个用于按下,聚焦和默认):
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" androuid:shape="rectangle">
<solid android:color="@color/btn_background_pressed" />
</shape>
剩下要做的就是将这些颜色值添加到color.xml文件中。