/**
* Construct an AlertDialog that uses an explicit theme. The actual style
* that an AlertDialog uses is a private implementation, however you can
* here supply either the name of an attribute in the theme from which
* to get the dialog's style (such as {@link R.attr#alertDialogTheme}.
*/
protected AlertDialog(@NonNull Context context, @StyleRes int themeResId) {
super(context, resolveDialogTheme(context, themeResId));
mAlert = new AlertController(getContext(), this, getWindow());
}
AlertController控制的布局。
public AlertController(Context context, AppCompatDialog di, Window window) {
mContext = context;
mDialog = di;
mWindow = window;
mHandler = new ButtonHandler(di);
final TypedArray a = context.obtainStyledAttributes(null, R.styleable.AlertDialog,
R.attr.alertDialogStyle, 0);
mAlertDialogLayout = a.getResourceId(R.styleable.AlertDialog_android_layout, 0);
mButtonPanelSideLayout = a.getResourceId(R.styleable.AlertDialog_buttonPanelSideLayout, 0);
mListLayout = a.getResourceId(R.styleable.AlertDialog_listLayout, 0);
mMultiChoiceItemLayout = a.getResourceId(R.styleable.AlertDialog_multiChoiceItemLayout, 0);
mSingleChoiceItemLayout = a
.getResourceId(R.styleable.AlertDialog_singleChoiceItemLayout, 0);
mListItemLayout = a.getResourceId(R.styleable.AlertDialog_listItemLayout, 0);
mShowTitle = a.getBoolean(R.styleable.AlertDialog_showTitle, true);
a.recycle();
/* We use a custom title so never request a window title */
di.supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
}