在花了很多时间后，删除了 EditText 的ContextMenu中的粘贴选项，我在 Java 中遵循了以下代码。
NoMenuEditText.Java
import android.content.Context;
import android.os.Handler;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import androidx.appcompat.widget.AppCompatEditText;
/**
* custom edit text
*/
public class NoMenuEditText extends AppCompatEditText {
private static final String EDITTEXT_ATTRIBUTE_COPY_AND_PASTE = "isCopyPasteDisabled";
private static final String PACKAGE_NAME = "http://schemas.android.com/apk/res-auto";
public NoMenuEditText(Context context) {
super(context);
}
public NoMenuEditText(Context context, AttributeSet attrs) {
super(context, attrs);
EnableDisableCopyAndPaste(context, attrs);
}
/**
* Enable/Disable Copy and Paste functionality on EditText
*
* @param context Context object
* @param attrs AttributeSet Object
*/
private void EnableDisableCopyAndPaste(Context context, AttributeSet attrs) {
boolean isDisableCopyAndPaste = attrs.getAttributeBooleanValue(PACKAGE_NAME,
EDITTEXT_ATTRIBUTE_COPY_AND_PASTE, false);
if (isDisableCopyAndPaste && !isInEditMode()) {
InputMethodManager inputMethodManager = (InputMethodManager)
context.getSystemService(Context.INPUT_METHOD_SERVICE);
this.setLongClickable(false);
this.setOnTouchListener(new BlockContextMenuTouchListener
(inputMethodManager));
}
}
/**
* Perform Focus Enabling Task to the widget with the help of handler object
* with some delay
*/
private void performHandlerAction(final InputMethodManager inputMethodManager) {
int postDelayedIntervalTime = 25;
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
NoMenuEditText.this.setSelected(true);
NoMenuEditText.this.requestFocusFromTouch();
inputMethodManager.showSoftInput(NoMenuEditText.this,
InputMethodManager.RESULT_SHOWN);
}
}, postDelayedIntervalTime);
}
/**
* Class to Block Context Menu on double Tap
* A custom TouchListener is being implemented which will clear out the focus
* and gain the focus for the EditText, in few milliseconds so the selection
* will be cleared and hence the copy paste option wil not pop up.
* the respective EditText should be set with this listener
*/
private class BlockContextMenuTouchListener implements View.OnTouchListener {
private static final int TIME_INTERVAL_BETWEEN_DOUBLE_TAP = 30;
private InputMethodManager inputMethodManager;
private long lastTapTime = 0;
BlockContextMenuTouchListener(InputMethodManager inputMethodManager) {
this.inputMethodManager = inputMethodManager;
}
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
long currentTapTime = System.currentTimeMillis();
if (lastTapTime != 0 && (currentTapTime - lastTapTime)
< TIME_INTERVAL_BETWEEN_DOUBLE_TAP) {
NoMenuEditText.this.setSelected(false);
performHandlerAction(inputMethodManager);
return true;
} else {
if (lastTapTime == 0) {
lastTapTime = currentTapTime;
} else {
lastTapTime = 0;
}
performHandlerAction(inputMethodManager);
return true;
}
} else if (event.getAction() == MotionEvent.ACTION_MOVE) {
NoMenuEditText.this.setSelected(false);
performHandlerAction(inputMethodManager);
}
return false;
}
}
@Override
protected void onSelectionChanged(int selStart, int selEnd) {
CharSequence text = getText();
if (text != null) {
if (selStart != text.length() || selEnd != text.length()) {
setSelection(text.length(), text.length());
return;
}
}
super.onSelectionChanged(selStart, selEnd);
}
@Override
public boolean isSuggestionsEnabled() {
return false;
}
@Override
public int getSelectionStart() {
for (StackTraceElement element : Thread.currentThread().getStackTrace()) {
if (element.getMethodName().equals("canPaste")) {
return -1;
}
}
return super.getSelectionStart();
}
}
主要活动
import androidx.appcompat.app.AppCompatActivity;
import android.content.ClipboardManager;
import android.content.Context;
import android.os.Bundle;
import android.view.ActionMode;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
public class MainActivity extends AppCompatActivity {
NoMenuEditText edt_username;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
edt_username = (NoMenuEditText) findViewById(R.id.edt_username);
edt_username.setLongClickable(false);
edt_username.setTextIsSelectable(false);
edt_username.setCustomSelectionActionModeCallback(new ActionMode.Callback() {
@Override
public boolean onCreateActionMode(ActionMode actionMode, Menu menu) {
return false;
}
@Override
public boolean onPrepareActionMode(ActionMode actionMode, Menu menu) {
return false;
}
@Override
public boolean onActionItemClicked(ActionMode actionMode, MenuItem menuItem) {
return false;
}
@Override
public void onDestroyActionMode(ActionMode actionMode) {
}
});
}
}
可绘制-zeropx.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<size
android:width="0dp"
android:height="0dp"/>
</shape>
attrs.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="NoMenuEditText">
<attr name="isCopyPasteDisabled" format="boolean" />
</declare-styleable>
</resources>
最后，我终于从EditText的上下文菜单中删除了粘贴选项
谢谢StackOverflow 帖子和http://androidinformative.com/disabling-context-menu/
