Java 如何实现OnLongClickListener到Bottom导航菜单项长按?
我在为菜单项创建长按侦听器时遇到问题 我已经尝试过在这方面使用几乎所有的解决方案,但都不起作用。Java 如何实现OnLongClickListener到Bottom导航菜单项长按?,java,android,listener,long-press,android-bottomnavigationview,Java,Android,Listener,Long Press,Android Bottomnavigationview,我在为菜单项创建长按侦听器时遇到问题 我已经尝试过在这方面使用几乎所有的解决方案,但都不起作用。 OnNavigationItemSelected工作正常,但OnLongClickListener从不激发我所做的任何事情。 当我声明MenuItem并通过其ID找到它时,没有可用的函数可以执行onlong click操作 我做错了什么 navigation.xml <?xml version="1.0" encoding="utf-8"?> &l
OnNavigationItemSelected
工作正常,但OnLongClickListener
从不激发我所做的任何事情。
当我声明MenuItem
并通过其ID找到它时,没有可用的函数可以执行onlong click
操作
我做错了什么
navigation.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/nav_home"
android:icon="@drawable/home_navigation_button"
/>
<item
android:id="@+id/nav_leaderboard"
android:icon="@drawable/leaderboard_navigation_button"
/>
<item
android:id="@+id/nav_addtree"
android:icon="@drawable/addtree"
/>
<item
android:id="@+id/nav_search"
android:icon="@drawable/search_navigation_button"
/>
<item
android:id="@+id/nav_profile"
android:icon="@drawable/profile_navigation_button"
/>
</menu>
您可以使用
bottomNav.findViewById()
并传入NavView
菜单项Id来完成此操作
View.OnLongClickListener listener = new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
switch (v.getId()) {
case R.id.nav_home:
break;
case R.id.nav_leaderboard:
break;
case R.id.nav_addtree:
break;
case R.id.nav_search:
break;
case R.id.nav_profile:
break;
}
return true;
}
};
bottomNav.findViewById(R.id.nav_home).setOnLongClickListener(listener);
bottomNav.findViewById(R.id.nav_leaderboard).setOnLongClickListener(listener);
bottomNav.findViewById(R.id.nav_addtree).setOnLongClickListener(listener);
bottomNav.findViewById(R.id.nav_search).setOnLongClickListener(listener);
bottomNav.findViewById(R.id.nav_profile).setOnLongClickListener(listener);
我的测试:
您能在使用此
BottomNavigationView
的地方发布活动的代码吗?
public class LoginTest extends AppCompatActivity {
TextView userID;
DataPresentersManager dataPresentersManager=new DataPresentersManager();
Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_test);
userID=(TextView)findViewById(R.id.userid);
FirebaseUser user=FirebaseAuth.getInstance().getCurrentUser();
userID.setText(user.getUid());
BottomNavigationView bottomNav = findViewById(R.id.bottom_navigation);
bottomNav.setOnNavigationItemSelectedListener(navListener);
bottomNav.setItemIconTintList(null);
//displayMainFragment();
}
private BottomNavigationView.OnNavigationItemSelectedListener navListener =
new BottomNavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
Fragment selectedFragment =null;
switch(item.getItemId()){
case R.id.nav_home:
selectedFragment=dataPresentersManager.currentPresenter.getFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, selectedFragment);
break;
case R.id.nav_leaderboard:
break;
case R.id.nav_addtree:
break;
case R.id.nav_search:
break;
case R.id.nav_profile:
break;
}
return true;
}
};
}
View.OnLongClickListener listener = new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
switch (v.getId()) {
case R.id.nav_home:
break;
case R.id.nav_leaderboard:
break;
case R.id.nav_addtree:
break;
case R.id.nav_search:
break;
case R.id.nav_profile:
break;
}
return true;
}
};
bottomNav.findViewById(R.id.nav_home).setOnLongClickListener(listener);
bottomNav.findViewById(R.id.nav_leaderboard).setOnLongClickListener(listener);
bottomNav.findViewById(R.id.nav_addtree).setOnLongClickListener(listener);
bottomNav.findViewById(R.id.nav_search).setOnLongClickListener(listener);
bottomNav.findViewById(R.id.nav_profile).setOnLongClickListener(listener);