@LukeTaylor: I currently have the same task at hand (creating a popup/dialog that contains an EditText).. Personally, I find the fully-dynamic route to be somewhat limiting in terms of creativity. FULLY CUSTOM DIALOG LAYOUT : Rather than relying entirely upon Code to create the Dialog, you can fully customize it like so : 1) - Create a new Layout Resource file.. This will act as your Dialog, allowing for full creative freedom! NOTE: Refer to the Material Design guidelines to help keep things clean and on point. 2) - Give ID's to all of your View elements.. In my example code below, I have 1 EditText, and 2 Buttons. 3) - Create an Activity with a Button, for testing purposes.. We'll have it inflate and launch your Dialog!

public void buttonClick_DialogTest(View view) {

    AlertDialog.Builder mBuilder = new AlertDialog.Builder(MainActivity.this);

    //  Inflate the Layout Resource file you created in Step 1
    View mView = getLayoutInflater().inflate(R.layout.timer_dialog_layout, null);

    //  Get View elements from Layout file. Be sure to include inflated view name (mView)
    final EditText mTimerMinutes = (EditText) mView.findViewById(R.id.etTimerValue);
    Button mTimerOk = (Button) mView.findViewById(R.id.btnTimerOk);
    Button mTimerCancel = (Button) mView.findViewById(R.id.btnTimerCancel);

    //  Create the AlertDialog using everything we needed from above
    mBuilder.setView(mView);
    final AlertDialog timerDialog = mBuilder.create();

    //  Set Listener for the OK Button
    mTimerOk.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick (View view) {
            if (!mTimerMinutes.getText().toString().isEmpty()) {
                Toast.makeText(MainActivity.this, "You entered a Value!,", Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(MainActivity.this, "Please enter a Value!", Toast.LENGTH_LONG).show();
            }
        }
    });

    //  Set Listener for the CANCEL Button
    mTimerCancel.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick (View view) {
            timerDialog.dismiss();
        }
    });

    //  Finally, SHOW your Dialog!
    timerDialog.show();


    //  END OF buttonClick_DialogTest
}

小菜一碟!充分的创作自由!只是要确保遵循材料指南;) 我希望这能帮助到一些人!告诉我你们的想法!

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);

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();

这是@Studio2bDesigns的答案的Kotlin实现，它提供了通过自定义布局创建文本输入对话框的能力。我用它来设置对话框，所以这就是为什么我使用不同的变量名。

val alertDialog = AlertDialog.Builder(this).create()
val settingsBinding = SettingsDialogBinding.inflate(layoutInflater) // SettingsDialogBinding provided by View binding
alertDialog.setView(settingsBinding.root)

settingsBinding.etLink.setText("Some text here")

settingsBinding.btnSave.setOnClickListener {
  if (settingsBinding.etLink.text.toString().isNotBlank()) {
    Toast.makeText(this, "You entered a Value!", Toast.LENGTH_LONG).show()
  } else {
    Toast.makeText(this, "Please enter a Value!", Toast.LENGTH_LONG).show()
  }
}
settingsBinding.btnCancel.setOnClickListener {
  alertDialog.dismiss() // close the dialog
}

alertDialog.show()

我将在@Aaron的回答中添加一种方法，让您有机会以更好的方式设置对话框的样式。下面是一个调整后的例子:

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();

下面是创建EditText对话框的示例布局:

<?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>

最终结果:

@LukeTaylor: I currently have the same task at hand (creating a popup/dialog that contains an EditText).. Personally, I find the fully-dynamic route to be somewhat limiting in terms of creativity. FULLY CUSTOM DIALOG LAYOUT : Rather than relying entirely upon Code to create the Dialog, you can fully customize it like so : 1) - Create a new Layout Resource file.. This will act as your Dialog, allowing for full creative freedom! NOTE: Refer to the Material Design guidelines to help keep things clean and on point. 2) - Give ID's to all of your View elements.. In my example code below, I have 1 EditText, and 2 Buttons. 3) - Create an Activity with a Button, for testing purposes.. We'll have it inflate and launch your Dialog!

public void buttonClick_DialogTest(View view) {

    AlertDialog.Builder mBuilder = new AlertDialog.Builder(MainActivity.this);

    //  Inflate the Layout Resource file you created in Step 1
    View mView = getLayoutInflater().inflate(R.layout.timer_dialog_layout, null);

    //  Get View elements from Layout file. Be sure to include inflated view name (mView)
    final EditText mTimerMinutes = (EditText) mView.findViewById(R.id.etTimerValue);
    Button mTimerOk = (Button) mView.findViewById(R.id.btnTimerOk);
    Button mTimerCancel = (Button) mView.findViewById(R.id.btnTimerCancel);

    //  Create the AlertDialog using everything we needed from above
    mBuilder.setView(mView);
    final AlertDialog timerDialog = mBuilder.create();

    //  Set Listener for the OK Button
    mTimerOk.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick (View view) {
            if (!mTimerMinutes.getText().toString().isEmpty()) {
                Toast.makeText(MainActivity.this, "You entered a Value!,", Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(MainActivity.this, "Please enter a Value!", Toast.LENGTH_LONG).show();
            }
        }
    });

    //  Set Listener for the CANCEL Button
    mTimerCancel.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick (View view) {
            timerDialog.dismiss();
        }
    });

    //  Finally, SHOW your Dialog!
    timerDialog.show();


    //  END OF buttonClick_DialogTest
}

小菜一碟!充分的创作自由!只是要确保遵循材料指南;) 我希望这能帮助到一些人!告诉我你们的想法!