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2024-01-22 08:00:06

输入文本对话框

当用户点击一个按钮在我的应用程序(这是打印在SurfaceView)，我想一个文本对话框出现，我想存储在字符串的结果。我想让文本对话框覆盖当前屏幕。我该怎么做呢?

当前回答

我发现扩展AlertDialog更干净、更可重用。创建自定义对话框类。这是一个要求用户输入电话号码的对话框。还可以通过在调用show()之前调用setNumber()来提供预先设置的电话号码。

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();
2018-10-02 20:27:25

其他回答

这是我的工作

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();
    }

怎么打电话?(当前活动名称)

showForgotDialog (current_activity_name.this);

2019-12-05 17:33:08

我发现扩展AlertDialog更干净、更可重用。创建自定义对话框类。这是一个要求用户输入电话号码的对话框。还可以通过在调用show()之前调用setNumber()来提供预先设置的电话号码。

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();
2018-10-02 20:27:25

这个例子怎么样?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();
2012-06-05 20:25:20

如果你想在输入视图的左边和右边有一些空间，你可以添加一些填充

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>

希望能有所帮助

2019-01-11 03:02:13

听起来是个使用AlertDialog的好机会。

就像它看起来一样基本，Android并没有内置的对话框来做到这一点(据我所知)。幸运的是，这只是在创建标准AlertDialog之上的一点额外工作。您只需要为用户创建一个EditText来输入数据，并将其设置为AlertDialog的视图。如果需要，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，您可以简单地将变量设置为EditText的值，并且在对话框结束后它将保持不变。如果不能使用成员变量，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，我可以编辑和详细说明)。

在你的班级内:

private String m_Text = "";

在你的按钮的OnClickListener(或在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();
2012-06-05 20:45:40

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