我正在开发一款Android应用程序，其中包含4个标签和1个工作室，可在4个标签中看到。
在Main_activity中，我为不同的标签和不同的动作提供了不同的图标。我的问题是，当我打开应用程序时，第一个选项卡中的fab按钮是不可点击的。只有在我选择任何其他选项卡时才会单击它，然后重新选择第一个选项卡，只有这样才能正常工作。
这是我的Main_activity.java。
public class Main_activity extends AppCompatActivity{
@Bind(R.id.main_activity)
View mView;
private int[] iconIntArray = {
R.drawable.book,
R.drawable.car,
R.drawable.cream,
R.drawable.bus};
private int[] tabIcons = {
R.drawable.school,
R.drawable.park,
R.drawable.ice,
R.drawable.garage
};
private TabLayout tabLayout;
public FloatingActionButton fab;
private FragmentManager mFragmentManager;
private FragmentTransaction mFragmentTransaction;
private NonSwipeableViewPager viewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
fab = (FloatingActionButton) findViewById(R.id.fab);
mFragmentManager = getSupportFragmentManager();
mFragmentTransaction = mFragmentManager.beginTransaction();
mFragmentTransaction.replace(R.id.viewpager, new bookFragment()).commit();
fab = (FloatingActionButton)findViewById(R.id.fab);
viewPager = (NonSwipeableViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
}
protected void animateFab(final int position) {
fab.clearAnimation();
// Scale down animation
ScaleAnimation shrink = new ScaleAnimation(1f, 0.1f, 1f, 0.1f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
shrink.setDuration(100); // animation duration in milliseconds
shrink.setInterpolator(new AccelerateInterpolator());
shrink.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
// Change FAB color and icon
fab.setImageDrawable(ContextCompat.getDrawable(getApplicationContext(), iconIntArray[position]));
// Rotate Animation
Animation rotate = new RotateAnimation(60.0f, 0.0f,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
rotate.setDuration(150);
rotate.setInterpolator(new DecelerateInterpolator());
// Scale up animation
ScaleAnimation expand = new ScaleAnimation(0.1f, 1f, 0.1f, 1f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
expand.setDuration(150); // animation duration in milliseconds
expand.setInterpolator(new DecelerateInterpolator());
// Add both animations to animation state
AnimationSet s = new AnimationSet(false); //false means don't share interpolators
s.addAnimation(rotate);
s.addAnimation(expand);
fab.startAnimation(s);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
});
fab.startAnimation(shrink);
}
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
tabLayout.getTabAt(3).setIcon(tabIcons[3]);
int tabIconColor = ContextCompat.getColor(Main_activity.this, R.color.green);
tabLayout.getTabAt(0).getIcon().setColorFilter(tabIconColor, PorterDuff.Mode.SRC_IN);
tabLayout.getTabAt(1).getIcon().setColorFilter(Color.parseColor("#a0a3a7"), PorterDuff.Mode.SRC_IN);
tabLayout.getTabAt(2).getIcon().setColorFilter(Color.parseColor("#a0a3a7"), PorterDuff.Mode.SRC_IN);
tabLayout.getTabAt(3).getIcon().setColorFilter(Color.parseColor("#a0a3a7"), PorterDuff.Mode.SRC_IN);
ColorStateList colors;
if (Build.VERSION.SDK_INT >= 23) {
colors = getResources().getColorStateList(R.color.ash, getTheme());
}
else {
colors = getResources().getColorStateList(R.color.red);
}
for (int i = 0; i < tabLayout.getTabCount(); i++) {
TabLayout.Tab tab = tabLayout.getTabAt(i);
assert tab != null;
Drawable icon = tab.getIcon();
if (icon != null) {
icon = DrawableCompat.wrap(icon);
DrawableCompat.setTintList(icon, colors);
}
}
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
tab.getIcon().setColorFilter(tabIconColor, PorterDuff.Mode.SRC_IN);
animateFab(tab.getPosition());
switch (tab.getPosition()) {
case 0:
viewPager.setCurrentItem(0);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//do this and that
}
});
break;
case 1:
viewPager.setCurrentItem(1);
fab.setOnClickListener(view -> {
//do this and that
});
break;
case 2:
viewPager.setCurrentItem(2);
fab.setOnClickListener(view -> {
//do this and that
});
break;
case 3:
viewPager.setCurrentItem(3);
fab.setOnClickListener(view -> {
//do this and that
});
break;
default:
break;
}
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
tab.getIcon().setColorFilter(Color.parseColor("#a0a3a7"), PorterDuff.Mode.SRC_IN);
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
private void setupViewPager(NonSwipeableViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new bookFragment(), "books");
adapter.addFragment(new carFragment(), "Cars");
adapter.addFragment(new iceFragment(),"Ice");
adapter.addFragment(new garage_fragment(), "garrage");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return null;
}
}
}
答案 0 :(得分：1)
使用此代码，每次切换选项卡时，都会为工作站设置不同的onClickListener。
你应该在全局设置一个onClickListener到你的工厂，在里面你应该检查你所在的选项卡并调整你的行为。