当用户点击我的应用中的Button
(打印在SurfaceView
中)时,我希望显示文字Dialog
,并且我想存储结果在String
中。我希望文本Dialog
覆盖当前屏幕。我怎么能这样做?
答案 0 :(得分:519)
听起来像是使用AlertDialog的好机会。
基本看起来,Android没有内置的对话框(据我所知)。幸运的是,除了创建标准的AlertDialog之外,还需要一些额外的工作。您只需为用户创建一个EditText来输入数据,并将其设置为AlertDialog的视图。如果需要,您可以使用setInputType自定义允许的输入类型。
如果您能够使用成员变量,则只需将变量设置为EditText的值,并且在对话框解除后它将保持不变。如果您不能使用成员变量,则可能需要使用侦听器将字符串值发送到正确的位置。 (如果这是你需要的话,我可以编辑和详细说明。)
在你班上:
private String m_Text = "";
在按钮的OnClickListener中(或从那里调用的函数中):
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Title");
// Set up the input
final EditText input = new EditText(this);
// Specify the type of input expected; this, for example, sets the input as a password, and will mask the text
input.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
builder.setView(input);
// Set up the buttons
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
m_Text = input.getText().toString();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
答案 1 :(得分:81)
我将使用一种方法更新@Aaron更新,让您有机会以更好的方式设置对话框。这是调整后的例子:
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setTitle("Title");
// I'm using fragment here so I'm using getView() to provide ViewGroup
// but you can provide here any other instance of ViewGroup from your Fragment / Activity
View viewInflated = LayoutInflater.from(getContext()).inflate(R.layout.text_inpu_password, (ViewGroup) getView(), false);
// Set up the input
final EditText input = (EditText) viewInflated.findViewById(R.id.input);
// Specify the type of input expected; this, for example, sets the input as a password, and will mask the text
builder.setView(viewInflated);
// Set up the buttons
builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
m_Text = input.getText().toString();
}
});
builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
以下是用于创建EditText对话框的布局示例:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="@dimen/content_padding_normal">
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<AutoCompleteTextView
android:id="@+id/input"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/hint_password"
android:imeOptions="actionDone"
android:inputType="textPassword" />
</android.support.design.widget.TextInputLayout>
</FrameLayout>
在这里你可以找到结果:
答案 2 :(得分:61)
这个EXAMPLE怎么样?这似乎很简单。
final EditText txtUrl = new EditText(this);
// Set the default text to a link of the Queen
txtUrl.setHint("http://www.librarising.com/astrology/celebs/images2/QR/queenelizabethii.jpg");
new AlertDialog.Builder(this)
.setTitle("Moustachify Link")
.setMessage("Paste in the link of an image to moustachify!")
.setView(txtUrl)
.setPositiveButton("Moustachify", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
String url = txtUrl.getText().toString();
moustachify(null, url);
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
}
})
.show();
答案 3 :(得分:3)
我发现扩展AlertDialog.Builder
来创建自定义对话框类更加干净和可重用。这是一个对话框,要求用户输入电话号码。也可以在致电setNumber()
之前先致电show()
来提供预设的电话号码。
InputSenderDialog.java
public class InputSenderDialog extends AlertDialog.Builder {
public interface InputSenderDialogListener{
public abstract void onOK(String number);
public abstract void onCancel(String number);
}
private EditText mNumberEdit;
public InputSenderDialog(Activity activity, final InputSenderDialogListener listener) {
super( new ContextThemeWrapper(activity, R.style.AppTheme) );
@SuppressLint("InflateParams") // It's OK to use NULL in an AlertDialog it seems...
View dialogLayout = LayoutInflater.from(activity).inflate(R.layout.dialog_input_sender_number, null);
setView(dialogLayout);
mNumberEdit = dialogLayout.findViewById(R.id.numberEdit);
setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
if( listener != null )
listener.onOK(String.valueOf(mNumberEdit.getText()));
}
});
setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
if( listener != null )
listener.onCancel(String.valueOf(mNumberEdit.getText()));
}
});
}
public InputSenderDialog setNumber(String number){
mNumberEdit.setText( number );
return this;
}
@Override
public AlertDialog show() {
AlertDialog dialog = super.show();
Window window = dialog.getWindow();
if( window != null )
window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
return dialog;
}
}
dialog_input_sender_number.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:padding="10dp">
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
android:paddingBottom="20dp"
android:text="Input phone number"
android:textAppearance="@style/TextAppearance.AppCompat.Large" />
<TextView
android:id="@+id/numberLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="@+id/title"
app:layout_constraintLeft_toLeftOf="parent"
android:text="Phone number" />
<EditText
android:id="@+id/numberEdit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="@+id/numberLabel"
app:layout_constraintLeft_toLeftOf="parent"
android:inputType="phone" >
<requestFocus />
</EditText>
</android.support.constraint.ConstraintLayout>
用法:
new InputSenderDialog(getActivity(), new InputSenderDialog.InputSenderDialogListener() {
@Override
public void onOK(final String number) {
Log.d(TAG, "The user tapped OK, number is "+number);
}
@Override
public void onCancel(String number) {
Log.d(TAG, "The user tapped Cancel, number is "+number);
}
}).setNumber(someNumberVariable).show();
答案 4 :(得分:2)
如果要在left
视图的right
和input
处留一些空间,可以添加一些填充,例如
private fun showAlertWithTextInputLayout(context: Context) {
val textInputLayout = TextInputLayout(context)
textInputLayout.setPadding(
resources.getDimensionPixelOffset(R.dimen.dp_19), // if you look at android alert_dialog.xml, you will see the message textview have margin 14dp and padding 5dp. This is the reason why I use 19 here
0,
resources.getDimensionPixelOffset(R.dimen.dp_19),
0
)
val input = EditText(context)
textInputLayout.hint = "Email"
textInputLayout.addView(input)
val alert = AlertDialog.Builder(context)
.setTitle("Reset Password")
.setView(textInputLayout)
.setMessage("Please enter your email address")
.setPositiveButton("Submit") { dialog, _ ->
// do some thing with input.text
dialog.cancel()
}
.setNegativeButton("Cancel") { dialog, _ ->
dialog.cancel()
}.create()
alert.show()
}
dimens.xml
<dimen name="dp_19">19dp</dimen>
希望有帮助
答案 5 :(得分:2)
@LukeTaylor:我目前手头有相同的任务(创建一个包含EditText的弹出窗口/对话框)。.
我个人认为,完全动态的路线在创造力方面有些局限。
完全自定义对话框布局:
您可以完全自定义对话框,而不是完全依赖 来创建对话框:
1)-。创建一个新的Layout Resource
文件。这将充当您的对话框,允许完全的创作自由!
注意:请参阅《材料设计指南》以帮助保持物品清洁和整齐。
2)-为您所有的View
元素提供ID。在下面的示例代码中,我有1个EditText
和2个Buttons
。
3)-用于测试的目的是创建带有Activity
的{{1}}。我们将对其进行充气并启动您的对话框!
Button
一块蛋糕!完全的创作自由!只要确保遵守材料准则;)
希望这对某人有帮助!让我知道你们的想法!
答案 6 :(得分:1)
这对我有用
private void showForgotDialog(Context c) {
final EditText taskEditText = new EditText(c);
AlertDialog dialog = new AlertDialog.Builder(c)
.setTitle("Forgot Password")
.setMessage("Enter your mobile number?")
.setView(taskEditText)
.setPositiveButton("Reset", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String task = String.valueOf(taskEditText.getText());
}
})
.setNegativeButton("Cancel", null)
.create();
dialog.show();
}
如何致电? (当前活动名称)
showForgotDialog(current_activity_name.this);