我想知道是否有一种方法来处理用户在输入EditText时按下Enter,就像onSubmit HTML事件。
还想知道是否有一种方法来操纵虚拟键盘,以这样的方式,“完成”按钮被标记为其他的东西(例如“Go”),并在单击时执行特定的动作(再次,像onSubmit)。
我想知道是否有一种方法来处理用户在输入EditText时按下Enter,就像onSubmit HTML事件。
还想知道是否有一种方法来操纵虚拟键盘,以这样的方式,“完成”按钮被标记为其他的东西(例如“Go”),并在单击时执行特定的动作(再次,像onSubmit)。
当前回答
I had a similar purpose. I wanted to resolve pressing the "Enter" key on the keyboard (which I wanted to customize) in an AutoCompleteTextView which extends TextView. I tried different solutions from above and they seemed to work. BUT I experienced some problems when I switched the input type on my device (Nexus 4 with AOKP ROM) from SwiftKey 3 (where it worked perfectly) to the standard Android keyboard (where instead of handling my code from the listener, a new line was entered after pressing the "Enter" key. It took me a while to handle this problem, but I don't know if it will work under all circumstances no matter which input type you use.
这是我的解决方案:
在xml中设置TextView的输入类型属性为"text":
android:inputType="text"
自定义键盘上“Enter”键的标签:
myTextView.setImeActionLabel("Custom text", KeyEvent.KEYCODE_ENTER);
将OnEditorActionListener设置为TextView:
myTextView.setOnEditorActionListener(new OnEditorActionListener()
{
@Override
public boolean onEditorAction(TextView v, int actionId,
KeyEvent event)
{
boolean handled = false;
if (event.getAction() == KeyEvent.KEYCODE_ENTER)
{
// Handle pressing "Enter" key here
handled = true;
}
return handled;
}
});
我希望这能帮助其他人避免我遇到的问题,因为它们几乎把我逼疯了。
其他回答
editText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId != 0 || event.getAction() == KeyEvent.ACTION_DOWN) {
// Action
return true;
} else {
return false;
}
}
});
Xml
<EditText
android:id="@+id/editText2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="@string/password"
android:imeOptions="actionGo|flagNoFullscreen"
android:inputType="textPassword"
android:maxLines="1" />
这在LG安卓手机上运行良好。它防止ENTER和其他特殊字符被解释为普通字符。“下一步”或“完成”按钮自动出现,“ENTER”按预期工作。
edit.setInputType(InputType.TYPE_CLASS_TEXT);
本页详细描述了如何做到这一点。
https://developer.android.com/training/keyboard-input/style.html
设置android:imeOptions,然后检查onEditorAction中的actionId。因此,如果你设置imeOptions为“actionDone”,那么你会检查“actionId == EditorInfo”。onEditorAction中的IME_ACTION_DONE `。另外,确保设置android:inputType。
如果使用材质设计,将代码放在TextInputEditText中。
下面是上面链接的例子中的EditText:
<EditText
android:id="@+id/search"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="@string/search_hint"
android:inputType="text"
android:imeOptions="actionSend" />
您还可以使用setImeOptions(int)函数以编程方式设置此选项。下面是上面链接的例子中的OnEditorActionListener:
EditText editText = (EditText) findViewById(R.id.search);
editText.setOnEditorActionListener(new OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
boolean handled = false;
if (actionId == EditorInfo.IME_ACTION_SEND) {
sendMessage();
handled = true;
}
return handled;
}
});
完美的工作
public class MainActivity extends AppCompatActivity {
TextView t;
Button b;
EditText e;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b = (Button) findViewById(R.id.b);
e = (EditText) findViewById(R.id.e);
e.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (before == 0 && count == 1 && s.charAt(start) == '\n') {
b.performClick();
e.getText().replace(start, start + 1, ""); //remove the <enter>
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void afterTextChanged(Editable s) {}
});
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
b.setText("ok");
}
});
}
}
完美的工作
A dependable way to respond to an <enter> in an EditText is with a TextWatcher, a LocalBroadcastManager, and a BroadcastReceiver. You need to add the v4 support library to use the LocalBroadcastManager. I use the tutorial at vogella.com: 7.3 "Local broadcast events with LocalBroadcastManager" because of its complete concise code Example. In onTextChanged before is the index of the end of the change before the change>;minus start. When in the TextWatcher the UI thread is busy updating editText's editable, so we send an Intent to wake up the BroadcastReceiver when the UI thread is done updating editText.
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.text.Editable;
//in onCreate:
editText.addTextChangedListener(new TextWatcher() {
public void onTextChanged
(CharSequence s, int start, int before, int count) {
//check if exactly one char was added and it was an <enter>
if (before==0 && count==1 && s.charAt(start)=='\n') {
Intent intent=new Intent("enter")
Integer startInteger=new Integer(start);
intent.putExtra("Start", startInteger.toString()); // Add data
mySendBroadcast(intent);
//in the BroadcastReceiver's onReceive:
int start=Integer.parseInt(intent.getStringExtra("Start"));
editText.getText().replace(start, start+1,""); //remove the <enter>
//respond to the <enter> here