如何编写在 android 的操作栏中打开搜索时出现的后退箭头的功能？

Question

我在操作栏中有一个 collapseActionView 搜索。当我们按下搜索按钮时，后退箭头出现在操作栏中主页按钮的位置......在聚焦 edittext 软键盘时出现......当我们在不提交搜索值的情况下单击后退箭头软键盘不会隐藏自身...如何为打开搜索视图时出现在操作栏中的后退箭头编写功能？

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE) {

            inflater.inflate(R.menu.main_activity_bar_l, menu);
        } else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_NORMAL) {

            inflater.inflate(R.menu.main_activity_bar, menu);
        } else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_SMALL) {

            inflater.inflate(R.menu.main_activity_bar, menu);
        } else {

            inflater.inflate(R.menu.main_activity_bar, menu);
        }
        View v = (View) menu.findItem(R.id.my_action).getActionView();




        /** Get the edit text from the action view */
        txtSearch = (EditText) v.findViewById(R.id.myActionEditText);

        /** Setting an action listener */

        ImageView Search = (ImageView) v.findViewById(R.id.search);
        Search.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                search_value = txtSearch.getText().toString();
                if (txtSearch.getText().toString().equals("")) {
                    Toast.makeText(getBaseContext(),
                            "Please enter search values", Toast.LENGTH_SHORT)
                            .show();
                } else {
                    Intent intent = new Intent(MainActivity.this,
                            Display.class);
                    intent.putExtra("Action_search", txtSearch.getText()
                            .toString());
                    startActivity(intent);
                    txtSearch.setText("");
                }
            }

        });

        return super.onCreateOptionsMenu(menu);
    }

我为主页按钮编写了功能，但它不起作用

@Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // toggle nav drawer on selecting action bar app icon/title
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        // Handle action bar actions click
         switch (item.getItemId()) {
//      
//       
//       
    case android.R.id.home:  

        Toast.makeText(MainActivity.this, "home", Toast.LENGTH_LONG).show();
         // count the active fragment
//       if(getSupportFragmentManager().getStackBackEntryCount() > 0) {
//           // hide soft method as above
//           InputMethodManager mImm = (InputMethodManager) this.getSystemService(Context.INPUT_METHOD_SERVICE); 
//           mImm.toggleSoftInput(InputMethodManager.HIDE_IMPLICIT_ONLY, 0);
//           // do the pop backstack
//           getSupportFragmentManager().popBackStack(); 
//       } else {  
//           // some stuff like finish the activity
         }
        return super.onOptionsItemSelected(item);
    }

Answer 1

在onPause中写这段代码即可：

public void hideSoftKeyboard() {
if(getCurrentFocus()!=null) {
InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
}
}

如何编写在 android 的操作栏中打开搜索时出现的后退箭头的功能？

How to write functionality for back arrow which appears when search is opened in action bar in android?

android

android-actionbar