解决方法
我认为您正在寻找的是TextView.setCustomSelectionActionModeCallback.这将允许您在选择文本时创建自己的ActionMode.Callback.然后,您可以使用TextView.getSelectionStart和TextView.getSelectionEnd在选择MenuItem时检索所选文本.这是一个简单的例子:
mTextView.setCustomSelectionActionModeCallback(new Callback() { @Override public boolean onPrepareActionMode(ActionMode mode,Menu menu) { // Remove the "select all" option menu.removeItem(android.R.id.selectAll); // Remove the "cut" option menu.removeItem(android.R.id.cut); // Remove the "copy all" option menu.removeItem(android.R.id.copy); return true; } @Override public boolean onCreateActionMode(ActionMode mode,Menu menu) { // Called when action mode is first created. The menu supplied // will be used to generate action buttons for the action mode // Here is an example MenuItem menu.add(0,DEFINITION,"Definition").setIcon(R.drawable.ic_action_book); return true; } @Override public void onDestroyActionMode(ActionMode mode) { // Called when an action mode is about to be exited and // destroyed } @Override public boolean onActionItemClicked(ActionMode mode,MenuItem item) { switch (item.getItemId()) { case DEFINITION: int min = 0; int max = mTextView.getText().length(); if (mTextView.isFocused()) { final int selStart = mTextView.getSelectionStart(); final int selEnd = mTextView.getSelectionEnd(); min = Math.max(0,Math.min(selStart,selEnd)); max = Math.max(0,Math.max(selStart,selEnd)); } // Perform your definition lookup with the selected text final CharSequence selectedText = mTextView.getText().subSequence(min,max); // Finish and close the ActionMode mode.finish(); return true; default: break; } return false; } });
结果