如何存储来自 Android 对话框的编辑文本数据?
How to store edit text data from an Android dialog?
我已经设置了一个包含多个编辑文本的警告对话框,但我不确定如何存储在警告对话框中输入的值。
通常我可以按照以下方式做一些事情:
final EditText input = new EditText(this);
alert.setView(input);
Editable value = input.getText();
但是我的 MessageDialog 是一个单独的 class,像这样从 SearchResult.java 调用,所以我不知道如何访问 MyMessageDialog.java 中的编辑文本实例:
MyMessageDialog.displayMessage(SearchResult.this, "Sample Info", "Required");
有谁知道如何在此实现中检索编辑文本值?
这是 MyMessageDialog class,下面是警告对话框的布局:
public class MyMessageDialog {
@SuppressLint("NewApi")
public static AlertDialog displayMessage(Context context, String title, String message){
AlertDialog.Builder builder = new AlertDialog.Builder(context);
LayoutInflater inflater = LayoutInflater.from(context);
builder.setTitle(title);
builder.setMessage(message);
builder.setView(inflater.inflate(R.layout.custom_view, null));
builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
return builder.create();
}
}
警报对话框布局,custom_view:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="ship name"
android:id="@+id/shipNameEditText" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="analyst name"
android:id="@+id/scientistEditText2" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="email address"
android:id="@+id/emailEditText3"
android:layout_gravity="center_horizontal" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="sample volume"
android:id="@+id/volumeEditText4" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="sample colour"
android:id="@+id/colourEditText4" />
</LinearLayout>
向您的 MyMessageDialog 添加接口 class 以传回值:
public interface MyMessageDialogListener {
public void onClosed(String ship, String scientist, String email, String volume, String color);
}
在创建对话框布局时存储它并提取 EditText 值并通过“确定”按钮 onClick 内的侦听器将它们传回:
public class MyMessageDialog {
public interface MyMessageDialogListener {
public void onClosed(String ship, String scientist, String email, String volume, String color);
}
@SuppressLint("NewApi")
public static AlertDialog displayMessage(Context context, String title, String message, final MyMessageDialogListener listener){
AlertDialog.Builder builder = new AlertDialog.Builder(context);
LayoutInflater inflater = LayoutInflater.from(context);
builder.setTitle(title);
builder.setMessage(message);
final View layoutView = inflater.inflate(R.layout.custom_view, null);
builder.setView(layoutView);
builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// get the edit text values here and pass them back via the listener
if(listener != null)
{
EditText text1 = (EditText)layoutView.findViewById(R.id.shipNameEditText);
EditText text2 = (EditText)layoutView.findViewById(R.id.scientistEditText2);
EditText text3 = (EditText)layoutView.findViewById(R.id.emailEditText3);
EditText text4 = (EditText)layoutView.findViewById(R.id.volumeEditText4);
EditText text5 = (EditText)layoutView.findViewById(R.id.colourEditText4);
listener.onClosed(text1.getText().toString(),
text2.getText().toString(),
text3.getText().toString(),
text4.getText().toString(),
text5.getText().toString());
}
dialog.cancel();
}
});
builder.show();
return builder.create();
}
}
调用对话框并使用它接收字符串时创建侦听器实例:
MyMessageDialog.displayMessage(SearchResult.this, "Sample Info", "Required",
new MyMessageDialog.MyMessageDialogListener() {
public void onClosed(String ship, String scientist, String email, String volume, String color)
{
// store / use the values here
}
});
我已经设置了一个包含多个编辑文本的警告对话框,但我不确定如何存储在警告对话框中输入的值。
通常我可以按照以下方式做一些事情:
final EditText input = new EditText(this);
alert.setView(input);
Editable value = input.getText();
但是我的 MessageDialog 是一个单独的 class,像这样从 SearchResult.java 调用,所以我不知道如何访问 MyMessageDialog.java 中的编辑文本实例:
MyMessageDialog.displayMessage(SearchResult.this, "Sample Info", "Required");
有谁知道如何在此实现中检索编辑文本值?
这是 MyMessageDialog class,下面是警告对话框的布局:
public class MyMessageDialog {
@SuppressLint("NewApi")
public static AlertDialog displayMessage(Context context, String title, String message){
AlertDialog.Builder builder = new AlertDialog.Builder(context);
LayoutInflater inflater = LayoutInflater.from(context);
builder.setTitle(title);
builder.setMessage(message);
builder.setView(inflater.inflate(R.layout.custom_view, null));
builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
return builder.create();
}
}
警报对话框布局,custom_view:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="ship name"
android:id="@+id/shipNameEditText" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="analyst name"
android:id="@+id/scientistEditText2" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="email address"
android:id="@+id/emailEditText3"
android:layout_gravity="center_horizontal" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="sample volume"
android:id="@+id/volumeEditText4" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="sample colour"
android:id="@+id/colourEditText4" />
</LinearLayout>
向您的 MyMessageDialog 添加接口 class 以传回值:
public interface MyMessageDialogListener {
public void onClosed(String ship, String scientist, String email, String volume, String color);
}
在创建对话框布局时存储它并提取 EditText 值并通过“确定”按钮 onClick 内的侦听器将它们传回:
public class MyMessageDialog {
public interface MyMessageDialogListener {
public void onClosed(String ship, String scientist, String email, String volume, String color);
}
@SuppressLint("NewApi")
public static AlertDialog displayMessage(Context context, String title, String message, final MyMessageDialogListener listener){
AlertDialog.Builder builder = new AlertDialog.Builder(context);
LayoutInflater inflater = LayoutInflater.from(context);
builder.setTitle(title);
builder.setMessage(message);
final View layoutView = inflater.inflate(R.layout.custom_view, null);
builder.setView(layoutView);
builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// get the edit text values here and pass them back via the listener
if(listener != null)
{
EditText text1 = (EditText)layoutView.findViewById(R.id.shipNameEditText);
EditText text2 = (EditText)layoutView.findViewById(R.id.scientistEditText2);
EditText text3 = (EditText)layoutView.findViewById(R.id.emailEditText3);
EditText text4 = (EditText)layoutView.findViewById(R.id.volumeEditText4);
EditText text5 = (EditText)layoutView.findViewById(R.id.colourEditText4);
listener.onClosed(text1.getText().toString(),
text2.getText().toString(),
text3.getText().toString(),
text4.getText().toString(),
text5.getText().toString());
}
dialog.cancel();
}
});
builder.show();
return builder.create();
}
}
调用对话框并使用它接收字符串时创建侦听器实例:
MyMessageDialog.displayMessage(SearchResult.this, "Sample Info", "Required",
new MyMessageDialog.MyMessageDialogListener() {
public void onClosed(String ship, String scientist, String email, String volume, String color)
{
// store / use the values here
}
});