在带有两个输入字段(用户名/密码)的登录对话框中,我想将焦点设置在第二个字段上(因为用户名存储在首选项中)。
AlertDialog.Builder是否提供了设置焦点的方法?
答案 0 :(得分:3)
如果您在对话框中使用自定义XML布局,则可以在<requestFocus />
上使用EditText
。
<EditText
android:id="@+id/etPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword" >
<requestFocus />
</EditText>
或者如果您想以编程方式执行此操作,请在显示对话框后在.requestFocus()
上使用EditText
。假设您有一个名为custom_login_dialog.xml
的自定义布局,其中包含用户名和密码字段:
// Inflate your custom layout
LayoutInflater inflater = (LayoutInflater) getLayoutInflater();
View customView = inflater.inflate(R.layout.custom_login_dialog, null);
// Define your EditText fields
final EditText etUsername = (EditText) customView.findViewById(R.id.etUsername);
final EditText etPassword = (EditText) customView.findViewById(R.id.etPassword);
// Build the dialog
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setView(customView); // Set the view of the dialog to your custom layout
builder.setTitle("Login");
builder.setPositiveButton("Login", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// ...
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// ...
}
});
// Create and show the dialog
builder.create().show();
// Request focus after showing dialog
etPassword.requestFocus();
答案 1 :(得分:2)
我也使用alertdialog,你可以尝试
final EditText input = new EditText(this);
input.setInputType(InputType.TYPE_CLASS_TEXT); // you should use .TYPE_TEXT_VARIATION_PASSWORD
input.requestFocus();
示例:
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(x);
builder.setIcon(R.drawable.x);
final EditText input = new EditText(this);
input.setInputType(InputType.TYPE_CLASS_TEXT);
input.setText("mytext");
builder.setView(input);
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
// xy
});
builder.setNegativeButton(cancel, new DialogInterface.OnClickListener() {
@Override
// xy
});
builder.show();
input.requestFocus(); // <--- for the focus
}
此致