Sag*_*ala 10 android textcolor background-color android-alertdialog
我想在不使用自定义布局的情况下更改AlertDialog 标题颜色和背景颜色。我的要求,
我试过下面的代码,但不能工作。
final CharSequence[] items = {" Visiting Card", "Prescription Letter"};
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setMessage(message)
.setTitle(title).setCancelable(false);
builder.setItems(items, (dialog, item) -> {
});
AlertDialog dialog = builder.create();
dialog.show();
int textViewId = dialog.getContext().getResources().getIdentifier("android:id/alertTitle", null, null);
TextView tv = dialog.findViewById(textViewId); // It always returns null
if (tv != null) {
tv.setTextColor(activity.getResources().getColor(R.color.white));
tv.setBackgroundColor(activity.getResources().getColor(R.color.colorPrimary));
}
Run Code Online (Sandbox Code Playgroud)
用下面我试图线,但它总是返回null的findViewById,
int textViewId = dialog.getContext().getResources().getIdentifier("android:id/alertTitle", null, null);
TextView tv = dialog.findViewById(textViewId);
Run Code Online (Sandbox Code Playgroud)
我也尝试使用,style但它只更改标题文本颜色,
<style name="AppCompatAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
<item name="colorAccent">@color/colorAccent</item>
<item name="android:background">#ffffff</item>
<item name="android:textColor">@color/white</item>
<item name="android:headerBackground">@color/colorPrimary</item>
</style>
Run Code Online (Sandbox Code Playgroud)
Ani*_*bla 13
您可以在警报对话框中使用自定义标题:
TextView textView = new TextView(context);
textView.setText("Select an option");
textView.setPadding(20, 30, 20, 30);
textView.setTextSize(20F);
textView.setBackgroundColor(Color.CYAN);
textView.setTextColor(Color.WHITE);
final CharSequence[] items = {"Visiting Card", "Prescription Letter"};
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setCustomTitle(textView);
builder.setItems(items, (dialog, item) -> {
}).show();
Run Code Online (Sandbox Code Playgroud)
小智 5
您可以使用自定义主题更改警报对话框标题、背景和按钮颜色的颜色。
<style name="CustomDialogTheme" parent="Theme.AppCompat.Light.Dialog.Alert">
<item name="android:windowBackground">@android:color/black</item>
<item name="colorAccent">@android:color/white</item>
<item name="android:textColorPrimary">@android:color/white</item>
</style>
Run Code Online (Sandbox Code Playgroud)
android: windowBackground 改变背景颜色
colorAccent 更改按钮颜色
android:textColorPrimary 更改对话框标题颜色
将此主题应用于对话框
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity(), R.style.CustomDialogTheme);
Run Code Online (Sandbox Code Playgroud)
| 归档时间: |
|
| 查看次数: |
14813 次 |
| 最近记录: |