android textview disable,android – 禁用EditText上下文菜单

你需要做三件事。

步骤1

您可以通过从这些方法返回false来禁用上下文菜单的显示，

mEditEext.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;

}

});

第2步

有必要在EditText中禁用长按。

mEditText.setLongClickable(false);

或者这样做，android：longClickable =“false”在XML中。

步骤3

现在，当您点击手柄时，您需要防止菜单出现。解决方案很简单，

1)扩展EditText类，

2)覆盖isSuggestionsEnabled()并返回false，

3)创建一个canPaste()方法并返回false。这是方法隐藏。

快速解决方案

如果您不想手动完成所有操作。这是一个自定义的EditText类，您可以使用它来快速完成此操作。但是，我仍然建议您一步一步地了解事情的运作。

public class MenuHidingEditText extends EditText {

private final Context mContext;

public MenuHidingEditText(Context context) {

super(context);

this.mContext = context;

blockContextMenu();

}

public MenuHidingEditText(Context context, AttributeSet attrs) {

super(context, attrs);

this.mContext = context;

blockContextMenu();

}

public MenuHidingEditText(Context context, AttributeSet attrs, int defStyle) {

super(context, attrs, defStyle);

this.mContext = context;

blockContextMenu();

}

private void blockContextMenu() {

this.setCustomSelectionActionModeCallback(new BlockedActionModeCallback());

this.setLongClickable(false);

this.setOnTouchListener(new OnTouchListener() {

@Override

public boolean onTouch(View v, MotionEvent event) {

MenuHidingEditText.this.clearFocus();

return false;

}

});

}

@Override

public boolean onTouchEvent(MotionEvent event) {

if (event.getAction() == MotionEvent.ACTION_DOWN) {

// setInsertionDisabled when user touches the view

this.setInsertionDisabled();

}

return super.onTouchEvent(event);

}

private void setInsertionDisabled() {

try {

Field editorField = TextView.class.getDeclaredField("mEditor");

editorField.setAccessible(true);

Object editorObject = editorField.get(this);

Class editorClass = Class.forName("android.widget.Editor");

Field mInsertionControllerEnabledField = editorClass.getDeclaredField("mInsertionControllerEnabled");

mInsertionControllerEnabledField.setAccessible(true);

mInsertionControllerEnabledField.set(editorObject, false);

}

catch (Exception ignored) {

// ignore exception here

}

}

@Override

public boolean isSuggestionsEnabled() {

return false;

}

private class BlockedActionModeCallback implements ActionMode.Callback {

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) {

}

}

}