我是Android开发领域的新手，最近我遇到了一个棘手的问题。
我试图制作一个不应允许用户从中复制内容或粘贴内容的编辑文本。我在谷歌上搜索了很多，发现似乎有两种流行的方法：
第一种方法，在布局文件中设置它：
android:longClickable="false"
第二种方法，以编程方式设置它：
myEdittext.setCustomSelectionActionModeCallback(new ActionMode.Callback() {
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
public void onDestroyActionMode(ActionMode mode) {
}
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
return false;
}
public boolean onActionItemClicked(ActionMode mode,
MenuItem item) {
return false;
}
});
但是我刚刚发现，无论我选择哪种方式，编辑文本区域只能从长点击中禁用，这会阻止用户通过长点击访问“全选、复制和粘贴”菜单。但是2解决方案都DID阻止用户通过简单的点击光标来访问“粘贴”功能。
所以我的问题是：我如何完全阻止用户在某个编辑文本中复制和粘贴功能。有人帮忙吗？谢谢你
您可以完全隐藏“全选、复制和粘贴”菜单以及简单点击光标时弹出的“粘贴”功能。
为此，您必须创建一个自定义EditText类。这是一个例子…
// Custom EditText class
public class NoMenuEditText extends EditText
{
private final Context context;
/** This is a replacement method for the base TextView class' method of the same name. This
* method is used in hidden class android.widget.Editor to determine whether the PASTE/REPLACE popup
* appears when triggered from the text insertion handle. Returning false forces this window
* to never appear.
* @return false
*/
boolean canPaste()
{
return false;
}
/** This is a replacement method for the base TextView class' method of the same name. This method
* is used in hidden class android.widget.Editor to determine whether the PASTE/REPLACE popup
* appears when triggered from the text insertion handle. Returning false forces this window
* to never appear.
* @return false
*/
@Override
public boolean isSuggestionsEnabled()
{
return false;
}
public NoMenuEditText(Context context)
{
super(context);
this.context = context;
init();
}
public NoMenuEditText(Context context, AttributeSet attrs)
{
super(context, attrs);
this.context = context;
init();
}
public NoMenuEditText(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
this.context = context;
init();
}
private void init()
{
this.setCustomSelectionActionModeCallback(new ActionModeCallbackInterceptor());
this.setLongClickable(false);
}
/**
* Prevents the action bar (top horizontal bar with cut, copy, paste, etc.) from appearing
* by intercepting the callback that would cause it to be created, and returning false.
*/
private class ActionModeCallbackInterceptor implements ActionMode.Callback
{
private final String TAG = NoMenuEditText.class.getSimpleName();
public boolean onCreateActionMode(ActionMode mode, Menu menu) { return false; }
public boolean onPrepareActionMode(ActionMode mode, Menu menu) { return false; }
public boolean onActionItemClicked(ActionMode mode, MenuItem item) { return false; }
public void onDestroyActionMode(ActionMode mode) {}
}
}
在您的布局中使用此EditText。现在，它不会显示任何复制/粘贴菜单。它将仅显示蓝色句柄，但当您单击时，您将不会弹出任何粘贴选项。
希望这有助于…
最佳编程方式是：
myEdittext.setLongClickable(false);
或者，只是在xml中
android:longClickable="false"
解决办法很简单
public class MainActivity extends AppCompatActivity {
EditText et_0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_0 = findViewById(R.id.et_0);
et_0.setCustomSelectionActionModeCallback(new ActionMode.Callback() {
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
//to keep the text selection capability available ( selection cursor)
return true;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
//to prevent the menu from appearing
menu.clear();
return false;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return false;
}
@Override
public void onDestroyActionMode(ActionMode mode) {
}
});
}
}
样本预览
