使用 EditText 的自定义警报对话框

void alertDialogDemo() {
        // get alert_dialog.xml view
        LayoutInflater li = LayoutInflater.from(getApplicationContext());
        View promptsView = li.inflate(R.layout.alert_dialog, null);

        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                getApplicationContext());

        // set alert_dialog.xml to alertdialog builder
        alertDialogBuilder.setView(promptsView);

        final EditText userInput = (EditText) promptsView.findViewById(R.id.etUserInput);

        // set dialog message
        alertDialogBuilder
                .setCancelable(false)
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // get user input and set it to result
                        // edit text
                        Toast.makeText(getApplicationContext(), "Entered: "+userInput.getText().toString(), Toast.LENGTH_LONG).show();
                    }
                })
                .setNegativeButton("Cancel",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                dialog.cancel();
                            }
                        });

        // create alert dialog
        AlertDialog alertDialog = alertDialogBuilder.create();

        // show it
        alertDialog.show();
    }

Xml 文件：res / layout / alert_dialog.xml

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Type Your Message : "
    android:textAppearance="?android:attr/textAppearanceLarge" />

<EditText
    android:id="@+id/etUserInput"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" >

    <requestFocus />

</EditText>