我已经在其中实现了tablayout和view-pager。根据tab和view-pager视图正确显示，
但问题是，当我滑动或选择标签时，它也会调整选项卡代码，并且在第一个标签页面中有警告对话框，当我选择第三个然后第二个时，第一个选项卡中的警报对话框也会显示在第二个标签中
这是我的代码
onefragement
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup containe,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_one, containe, false);
nxt_followup = (EditText) view.findViewById(R.id.nextfollowup);
img1 = (ImageView) view.findViewById(R.id.img1);
img2 = (ImageView) view.findViewById(R.id.img2);
img3 = (ImageView) view.findViewById(R.id.img3);
sign = (TextView) view.findViewById(R.id.sign);
issign = (ImageView) view.findViewById(R.id.ifsign);
add = (EditText) view.findViewById(R.id.address);
rg = (RadioGroup) view.findViewById(R.id.rg_isreg);
rb_yes = (RadioButton) view.findViewById(R.id.rb_yes);
rb_no = (RadioButton) view.findViewById(R.id.rb_no);
cd = new ConnectionDetector(getActivity());
// tvsw=(TextView)view.findViewById(R.id.tvsw);
// handler = new Handler();
// StartTime = SystemClock.uptimeMillis();
// handler.postDelayed(runnable, 0);
rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
selectId = rg.getCheckedRadioButtonId();
rb = (RadioButton) group.findViewById(checkedId);
Str = rb.getText().toString();
Log.d("RadioID", String.valueOf(checkedId));
if (Str.contains("Yes")) {
}
if (Str.equals("No")) {
new android.app.AlertDialog.Builder(getActivity()).setTitle("Registration")
.setMessage("Do u want to make new Registration ?")
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
reg_dialog = new Dialog(getActivity());
reg_dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
reg_dialog.setContentView(R.layout.reg_dialog);
final RadioGroup utype = (RadioGroup) reg_dialog.findViewById(R.id.rg_signup);
Button submit = (Button) reg_dialog.findViewById(R.id.btn_proceed);
uname = (EditText) reg_dialog.findViewById(R.id.et_fullName);
mobile = (EditText) reg_dialog.findViewById(R.id.et_mobile);
email = (EditText) reg_dialog.findViewById(R.id.et_signUp_email);
pwd = (EditText) reg_dialog.findViewById(R.id.et_pwd);
repwd = (EditText) reg_dialog.findViewById(R.id.et_repass);
ref_code = (EditText) reg_dialog.findViewById(R.id.et_referral);
submit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int selectId = utype.getCheckedRadioButtonId();
rb = (RadioButton) reg_dialog.findViewById(selectId);
user = rb.getText().toString();
strEmail = email.getText().toString();
strMobile = mobile.getText().toString();
boolean b = isValidEmail(strEmail);
if (uname.getText().toString().equalsIgnoreCase("") |
email.getText().toString().equalsIgnoreCase("") |
pwd.getText().toString().equalsIgnoreCase("") |
repwd.getText().toString().equalsIgnoreCase("") |
mobile.getText().toString().equalsIgnoreCase("")) {
Toast.makeText(getActivity(), "Please fill Complete form", Toast.LENGTH_SHORT).show();
} else {
if (pwd.getText().toString().equals(repwd.getText().toString())) {
if (b == true) {
if (strMobile.matches(mobilePattern)) {
if (ref_code.getText().toString().equalsIgnoreCase("")) {
ReferralCodeAlert();
} else {
isInternetPresent = cd.isConnectingToInternet();
if (isInternetPresent) {
new HttpAsyncTask().execute("https://eprintpost.com/AndroidServlets/SignUpReg");
} else {
Toast.makeText(getActivity(), "Please check internet connection", Toast.LENGTH_LONG).show();
}
}
} else {
mobile.setError("Enter Valid Mobile Number");
}
} else {
email.setError("Enter Valid Email");
}
} else {
repwd.setError("Password not match");
}
}
}
});
reg_dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(final DialogInterface arg0) {
Str = "";
}
});
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
lp.copyFrom(reg_dialog.getWindow().getAttributes());
lp.width = WindowManager.LayoutParams.MATCH_PARENT;
lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
lp.gravity = Gravity.CENTER;
reg_dialog.getWindow().setAttributes(lp);
reg_dialog.show();
}
}).setNegativeButton("No", null).show();
}
}
private void ReferralCodeAlert() {
new android.app.AlertDialog.Builder(getActivity()).setIcon(android.R.drawable.ic_dialog_alert).setTitle("Alert")
.setMessage("Are you sure want to proceed without entering referral code?")
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
isInternetPresent = cd.isConnectingToInternet();
if (isInternetPresent) {
new HttpAsyncTask().execute("https://eprintpost.com/AndroidServlets/SignUpReg");
} else {
Toast.makeText(getActivity(), "Please check internet connection", Toast.LENGTH_LONG).show();
}
}
}).setNegativeButton("No", null).show();
}
public boolean isValidEmail(CharSequence target) {
if (target == null) {
return false;
} else {
return android.util.Patterns.EMAIL_ADDRESS.matcher(target).matches();
}
}
});
final LocationManager manager = (LocationManager) getActivity().getSystemService(LOCATION_SERVICE);
if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER))
{
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage("GPS Is Disabled.Please Turn it ON")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
} else {
locationManager = (LocationManager) getActivity().getSystemService(LOCATION_SERVICE);
Criteria criteria = new Criteria();
String bestProvider = locationManager.getBestProvider(criteria, true);
location = locationManager.getLastKnownLocation(bestProvider);
locationManager.requestLocationUpdates(bestProvider, 20000, 0, this);
if (location != null) {
Log.v("Abhijit", "" + location.getLatitude() + "longgg" + location.getLongitude());
Geocoder geocoder;
List<Address> addresses = null;
geocoder = new Geocoder(getActivity(), Locale.getDefault());
try {
addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1); // Here 1 represent max location result to returned, by documents it recommended 1 to 5
} catch (IOException e) {
e.printStackTrace();
}
if (addresses.get(0).getMaxAddressLineIndex() != 0)
for (int i = 0; i < addresses.get(0).getMaxAddressLineIndex(); i++) {
addline += " " + addresses.get(0).getAddressLine(i);
}
add.setText("" + addline);
}
// String address = addresses.get(0).getAddressLine(0);
// // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
// String city = addresses.get(0).getLocality();
// String state = addresses.get(0).getAdminArea();
// String country = addresses.get(0).getCountryName();
// String postalCode = addresses.get(0).getPostalCode();
// String knownName = addresses.get(0).getFeatureName(); // Only if available else return NULL
}
tempDir = new File(Environment.getExternalStorageDirectory() + File.separator + ".Marketing");
if (tempDir.exists())
deleteDir(tempDir);
if (tempDir.mkdir()) {
signi = new File(tempDir.getAbsolutePath() + File.separator + "sign.png");
}
sign.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
sign_dialog = new Dialog(getActivity());
sign_dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
sign_dialog.setContentView(R.layout.signature_dialog);
sign_dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(final DialogInterface arg0) {
if (signi.exists()) {
issign.setVisibility(View.VISIBLE);
}
}
});
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
lp.copyFrom(sign_dialog.getWindow().getAttributes());
lp.width = WindowManager.LayoutParams.MATCH_PARENT;
lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
lp.gravity = Gravity.CENTER;
sign_dialog.getWindow().setAttributes(lp);
mContent = (LinearLayout) sign_dialog.findViewById(R.id.linearLayout);
mView = mContent;
Button clear = (Button) sign_dialog.findViewById(R.id.clear);
Button get_sign = (Button) sign_dialog.findViewById(R.id.sign_get);
mSignature = new signature1(getActivity(), null);
mSignature.setBackgroundColor(Color.WHITE);
mContent.addView(mSignature, LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT);
get_sign.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mView.setDrawingCacheEnabled(true);
mSignature.save(mView);
sign_dialog.dismiss();
}
});
clear.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mSignature.clear();
}
});
sign_dialog.show();
}
});
img1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 1);
}
});
img2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 2);
}
});
img3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 3);
}
});
nxt_followup.setClickable(true);
nxt_followup.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Calendar now = Calendar.getInstance();
//display date picker dialog
DatePickerDialog dpd = DatePickerDialog.newInstance(
OneFragment.this,
now.get(Calendar.YEAR),//current year
now.get(Calendar.MONTH),//current month
now.get(Calendar.DAY_OF_MONTH)//current date
);
dpd.setMinDate(now);
//set the theme
dpd.setThemeDark(false);
//vibrate on open
dpd.vibrate(true);
dpd.setAccentColor(Color.parseColor("#ff4081"));
dpd.dismissOnPause(false);
dpd.show(getActivity().getFragmentManager(), "Follow Date");
}
});
return view;
}
这是我的主要活动代码，我使用tablayout设置viewpager
MainActivity.java
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private TabLayout tabLayout;
private ViewPager viewPager;
AppBarLayout ab;
private int[] tabIcons = {
R.mipmap.ic_tab_contacts,
R.mipmap.ic_tab_call,
R.mipmap.ic_tab_report,
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
Log.v("Abhijit", "" + MainActivity.this.getResources().getConfiguration().orientation);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setItemIconTintList(null);
navigationView.setNavigationItemSelectedListener(this);
ab = (AppBarLayout) findViewById(R.id.aaa);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
int tabIconColor = ContextCompat.getColor(MainActivity.this, R.color.yellow);
tabLayout.getTabAt(0).getIcon().setColorFilter(tabIconColor, PorterDuff.Mode.SRC_IN);
tabLayout.setTabTextColors(Color.parseColor("#FFFFFF"), Color.parseColor("#FF9800"));
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
Log.e("abhijjit", String.valueOf(tab.getPosition()));
int tabIconColor = ContextCompat.getColor(MainActivity.this, R.color.yellow);
tab.getIcon().setColorFilter(tabIconColor, PorterDuff.Mode.SRC_IN);
tabLayout.setTabTextColors(Color.parseColor("#FFFFFF"), Color.parseColor("#FF9800"));
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
int tabIconColor = ContextCompat.getColor(MainActivity.this, R.color.white);
tab.getIcon().setColorFilter(tabIconColor, PorterDuff.Mode.SRC_IN);
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_new) {
// Handle the camera action
viewPager.setCurrentItem(0);
} else if (id == R.id.nav_existing) {
viewPager.setCurrentItem(1);
} else if (id == R.id.nav_report) {
viewPager.setCurrentItem(2);
} else if (id == R.id.nav_share) {
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "Hey share successful");
sendIntent.setType("text/plain");
startActivity(Intent.createChooser(sendIntent, getResources().getText(R.string.app_name)));
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new OneFragment(), "New");
adapter.addFragment(new TwoFragment(), "Existing");
adapter.addFragment(new ThreeFragment(), "Reports");
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 mFragmentTitleList.get(position);
}
}
}
如何克服这一问题，不要从另一个tab中的其他标签执行代码。我想只运行那个标签可见的代码
答案 0 :(得分：0)
使用它。
viewPager.setOffscreenPageLimit(0)
这将停止加载页面eralier。