android - HideSoftKeyboard 在 onClickListener 中不起作用

Question

每当从 autoCompleteteTextView 的下拉列表中选择一个元素时，我想隐藏键盘。我已经编写了这段代码并且它没有任何错误地工作但是真正发生的是每当我点击autoCompleteteTextView时，键盘会立即出现和消失，因为onClick函数中的hideSofInputFromWindow。这是 Java 代码:

package random.one.com.Perfecto;
    import android.os.Bundle;
    import android.support.design.widget.TabLayout;
    import android.support.v4.app.FragmentManager;
    import android.support.v4.app.FragmentPagerAdapter;
    import android.support.v4.view.PagerAdapter;
    import android.support.v4.view.ViewPager;
    import android.support.design.widget.NavigationView;
    import android.support.v4.view.GravityCompat;
    import android.support.v4.widget.DrawerLayout;
    import android.support.v7.app.AppCompatActivity;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.inputmethod.InputMethodManager;
    import android.widget.ArrayAdapter;
    import android.widget.AutoCompleteTextView;
    import android.widget.ImageView;
    import android.widget.TextView;
    import com.google.android.gms.ads.AdRequest;
    import com.google.android.gms.ads.AdView;
    import com.google.android.gms.ads.InterstitialAd;

    public class Home extends AppCompatActivity   implements NavigationView.OnNavigationItemSelectedListener {
        private AutoCompleteTextView textView1;
        private InterstitialAd mInterstitialAd;
        private static final String TAG = "MainActivity";
        private AdView mAdView;
        private View view;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_home);
            mInterstitialAd = new InterstitialAd(this);
            mInterstitialAd.loadAd(new AdRequest.Builder().build());
            final ImageView toolbar1 = (ImageView) findViewById(R.id.Toolbar1);
            final DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
            mAdView = (AdView) findViewById(R.id.adView);
            AdRequest adRequest = new AdRequest.Builder().build();
            mAdView.loadAd(adRequest);
            toolbar1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                    drawer.openDrawer(GravityCompat.START);

            }
            });
            NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
            navigationView.setNavigationItemSelectedListener(this);
            ViewPager vp_pages= (ViewPager) findViewById(R.id.vp_pages);
            PagerAdapter pagerAdapter=new FragmentAdapter(getSupportFragmentManager());
            vp_pages.setAdapter(pagerAdapter);
            TabLayout tbl_pages= (TabLayout) findViewById(R.id.tbl_pages);
            tbl_pages.setupWithViewPager(vp_pages);
            final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(
                    this, android.R.layout.simple_spinner_dropdown_item,
                    getResources().getStringArray(R.array.Loc_names));
            textView1 =(AutoCompleteTextView) findViewById(R.id.acT1);
            textView1.setAdapter(arrayAdapter);
            textView1.setThreshold(1);
            textView1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(final View arg0) {

                    textView1.showDropDown();
                    hideKeyBoard(view);
                    String city = arrayAdapter.getItem(3);
                    TextView tv =  (TextView) findViewById(R.id.tv1);
                    tv.setText(city);
                }
            });
        }
        @Override
        public void onBackPressed() {
            DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
            if (drawer.isDrawerOpen(GravityCompat.START)) {
                drawer.closeDrawer(GravityCompat.START);
            } else {
                super.onBackPressed();
            }
        }
        @SuppressWarnings("ConstantConditions")
        public void hideKeyBoard(View view){
        InputMethodManager imm = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(),0);}
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
                  return true;
        }
        @SuppressWarnings("StatementWithEmptyBody")
        @Override
        public boolean onNavigationItemSelected(MenuItem item) {
            // Handle navigation view item clicks here.
            int id = item.getItemId();
            if (id == R.id.nav_Home) {
                // Handle the camera action
            } else if (id == R.id.nav_Route) {

            } else if (id == R.id.nav_Map) {

            } else if (id == R.id.nav_Share) {

            } else if (id == R.id.nav_About) {

            }

            DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
            drawer.closeDrawer(GravityCompat.START);
            return true;
        }
        class FragmentAdapter extends FragmentPagerAdapter {
            public FragmentAdapter(FragmentManager fm) {
                super(fm);
            }
            @Override
            public android.support.v4.app.Fragment getItem(int position) {
                switch (position) {
                    case 0:
                        return new Metro();
                    case 1:
                        return new Bus();
                }
                return null;
            }
            @Override
            public int getCount() {
                return 2;
            }
            @Override
            public CharSequence getPageTitle(int position) {
                switch (position) {
                    //
                    //Your tab titles
                    //
                    case 0:
                        return "Metro";
                    case 1:
                        return "Bus";

                    default:
                        return null;
                }
            }
        }
    }

那么，有什么方法可以让键盘仅在单击下拉项时隐藏。还有如何通过这个方法得到哪个项目被点击(位置)。

Answer 1

您需要将下面的行移动到下面的代码，请参阅评论:

hideKeyBoard(view);

-在下拉选择中隐藏键盘:

 textView1.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
          hideKeyBoard(view);//move here
          String selection = (String) parent.getItemAtPosition(position);//get item selected

    }
});

-可以通过上面的onItemClick的position获取点击了哪个item。