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Ich möchte eine Registerkarte Hintergrundfarbe ausgewählt ändern. Ich möchte eine Farbe auf grünem Hintergrund meine Registerkarte ändern, wenn ausgewählt und verändert einen Farbhintergrund nicht ausgewählten Registerkarte # a8a8a8Java android change color Registerkarte ausgewählt Registerkarte
Aber wenn ich in logs Swipe Ich sehe dies:
Process: pl.smok, PID: 28410
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.graphics.drawable.Drawable.setColorFilter(int, android.graphics.PorterDuff$Mode)' on a null object reference
at pl..smok.ui.activity.MainActivity$2.onTabUnselected(MainActivity.java:163)
at android.support.design.widget.TabLayout.dispatchTabUnselected(TabLayout.java:1163)
at android.support.design.widget.TabLayout.selectTab(TabLayout.java:1149)
at android.support.design.widget.TabLayout.selectTab(TabLayout.java:1124)
at android.support.design.widget.TabLayout$Tab.select(TabLayout.java:1419)
at android.support.design.widget.TabLayout$TabView.performClick(TabLayout.java:1524)
at android.view.View$PerformClick.run(View.java:22526)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7224)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Dieser vollständige Code ist:
public class MainActivity extends AppCompatActivity {
@BindView(R.id.view_pager)
ViewPager viewPager;
@BindView(R.id.tab_layout)
TabLayout tabLayout;
ActionBar actionBar;
SharedPreferences sp;
SharedPreferences.Editor editor;
int choose;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
sp = getSharedPreferences("pfref", Activity.MODE_PRIVATE);
editor = sp.edit();
choose = sp.getInt("screen", 1);
// String token = FirebaseInstanceId.getInstance().getToken();
// Log.e("Token: ", token);
if(choose == 1)
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
else
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
actionBar = getSupportActionBar();
hideActionBar();
String[] tabs = {"start", "status", "wiadomości", "nowa wiadomość"};
viewPager.setOffscreenPageLimit(4);
viewPager.setAdapter(new PageAdapter(getFragmentManager(), tabs));
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener(){
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
CommonUtil.hideKeyboard(MainActivity.this);
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
tabLayout.setupWithViewPager(viewPager);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Window window = getWindow();
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
window.setStatusBarColor(getResources().getColor(R.color.colorBrown));
}
getFragmentManager()
.beginTransaction()
.add(R.id.top_bar_container, new TopBarFragment(), TopBarFragment.class.getName())
.commit();
processIntent(getIntent());
createTabIcons();
setupTabIcons();
}
@Override
protected void onResume() {
super.onResume();
choose = sp.getInt("screen", 1);
if(choose == 1)
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
else
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
private void setupTabIcons() {
// tabLayout.getTabAt(1).getIcon().setColorFilter(Color.parseColor("#a8a8a8"), PorterDuff.Mode.SRC_IN);
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
// tab.getIcon().mutate().setColorFilter(Color.GREEN, PorterDuff.Mode.SRC_IN);
Log.e("tab count " , tab.getPosition() + " ");
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
// tab.getIcon().setColorFilter(Color.parseColor("#a8a8a8"), PorterDuff.Mode.SRC_IN);
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
@Override
protected void onStart() {
super.onStart();
App.getBus().register(this);
runServices();
}
@Override
protected void onStop() {
super.onStop();
App.getBus().unregister(this);
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
processIntent(intent);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
protected void processIntent(Intent intent) {
if (intent != null && intent.getIntExtra(Const.KEY_GOTO, 0) == 1 && viewPager != null) {
viewPager.setCurrentItem(2);
}
}
@Subscribe
public void onPermissionRequestedEvent(PermissionRequestedEvent event) {
PermissionUtil.getPermission(this, event.getPermission());
}
@Subscribe
public void onPermissionGrantedEvent(PermissionGrantedEvent event) {
if (event.getPermission().equals(Manifest.permission.ACCESS_FINE_LOCATION)) {
runLocationService();
}
}
@Subscribe
public void onPageNavigateEvent(PageNavigateEvent event) {
Intent intent;
switch (event.getPage()) {
case Const.APP_SETTINGS_LOCATION:
CommonUtil.hideKeyboard(this);
intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
break;
case Const.PAGE_START:
viewPager.setCurrentItem(0);
break;
case Const.PAGE_STATUSES:
viewPager.setCurrentItem(1);
break;
case Const.PAGE_MESSAGES:
viewPager.setCurrentItem(2);
break;
case Const.PAGE_SEND_MESSAGE:
viewPager.setCurrentItem(3);
break;
default: break;
}
}
@Subscribe(sticky = true)
public void onLoggedOutEvent(LoggedOutEvent event) {
String user = Hawk.get(HawkConst.LOGIN_USER);
String company = Hawk.get(HawkConst.LOGIN_COMPANY);
String password = Hawk.get(HawkConst.LOGIN_PASSWORD);
Hawk.clear();
Hawk.put(HawkConst.LOGIN_USER, user);
Hawk.put(HawkConst.LOGIN_COMPANY, company);
Hawk.put(HawkConst.LOGIN_PASSWORD, password);
stopLocationService();
stopTrackerService();
stopConfigService();
FileUtil.clearDirs();
Intent intent = new Intent(MainActivity.this, StartActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
App.getBus().removeStickyEvent(LoggedOutEvent.class);
}
@Subscribe
public void onPhotoRequestedEvent(PhotoRequestedEvent event) {
Intent intent;
switch (event.getRequestCode()) {
case Const.PHOTO_GALLERY:
intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(Intent.createChooser(intent, getResources().getString(R.string.choose_image_title)), event.getRequestCode());
break;
case Const.PHOTO_CAMERA:
intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, FileUtil.getOutputTempUri("images"));
startActivityForResult(intent, event.getRequestCode());
break;
default: break;
}
}
@Subscribe
public void onFileViewRequestEvent(FileViewRequestEvent event) {
File file = FileUtil.getFile(event.getEvent().getId());
if (file == null) {
Toast.makeText(this, getResources().getString(R.string.file_not_exists), Toast.LENGTH_LONG).show();
} else {
Uri uri = Uri.fromFile(file);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
try {
String type = FileUtil.getMimeType(file.getPath());
intent.setDataAndType(uri, type);
startActivity(intent);
App.getBus().post(new FileViewedEvent(event.getEvent()));
} catch (Exception e) {
e.printStackTrace();
try {
intent.setDataAndType(uri, "*/*");
startActivity(intent);
App.getBus().post(new FileViewedEvent(event.getEvent()));
} catch (Exception ee) {
ee.printStackTrace();
Toast.makeText(this, getResources().getString(R.string.no_file_app), Toast.LENGTH_LONG).show();
}
}
}
}
@Subscribe
public void onHideKeyboardEvent() {
CommonUtil.hideKeyboard(this);
}
@Subscribe
public void onMoveAppBackgroundEvent(MoveAppBackgroundEvent event) {
moveTaskToBack(true);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
switch (requestCode) {
case Const.PHOTO_GALLERY:
App.getBus().postSticky(new PhotoSelectedEvent(data.getData())); break;
case Const.PHOTO_CAMERA:
Uri uri = FileUtil.renameFile(App.getConfigRepository().getPhotoMaxWidth());
App.getBus().postSticky(new PhotoSelectedEvent(uri)); break;
default: break;
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case Const.PERMISSIONS_REQUEST_LOCATION:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
App.getBus().post(new PermissionGrantedEvent(Manifest.permission.ACCESS_FINE_LOCATION));
}
break;
default:
break;
}
}
protected void runServices() {
if (LocationUtil.isLocationEnabled(getBaseContext())) {
if (checkPermission()) {
runLocationService();
}
} else {
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setMessage(getResources().getString(R.string.location_settings_disabled));
dialog.setPositiveButton(getString(R.string.go_to_location_settings), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
App.getBus().post(new PageNavigateEvent(Const.APP_SETTINGS_LOCATION));
}
});
dialog.setNegativeButton(getResources().getString(R.string.cancel), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
finish();
}
});
dialog.show();
}
runTrackerService();
runConfigService();
}
protected void runLocationService() {
startService(new Intent(this, LocationService.class));
}
protected void stopLocationService() {
stopService(new Intent(this, LocationService.class));
}
protected void runTrackerService() {
startService(new Intent(this, TrackerService.class));
}
protected void stopTrackerService() {
stopService(new Intent(this, TrackerService.class));
}
protected void runConfigService() {
startService(new Intent(this, ConfigService.class));
}
protected void stopConfigService() {
stopService(new Intent(this, ConfigService.class));
}
protected boolean checkPermission() {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
App.getBus().post(new PermissionRequestedEvent(Manifest.permission.ACCESS_FINE_LOCATION));
return false;
}
return true;
}
protected void hideActionBar() {
if (actionBar != null) {
actionBar.hide();
}
}
private void createTabIcons(){
}
}
Und das ist XML-Code für diese Aktivität. activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff"
tools:context="pl.eltegps.smokkomunikator.ui.activity.MainActivity">
<FrameLayout
android:id="@+id/top_bar_container"
android:layout_width="match_parent"
android:layout_height="70dp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/top_bar_container">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingTop="?attr/actionBarSize">
<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_vertical_margin"
android:paddingRight="@dimen/activity_vertical_margin"
android:paddingTop="@dimen/activity_vertical_margin" />
</LinearLayout>
<android.support.design.widget.TabLayout
android:id="@+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="center_horizontal"
android:minHeight="?attr/actionBarSize"
android:paddingTop="@dimen/activity_vertical_margin"
app:tabGravity="center"
app:tabIndicatorColor="#fff"
app:tabMode="scrollable"
app:tabTextAppearance="@style/MyCustomTextAppearance" />
</RelativeLayout>
</RelativeLayout>
@IntelliJAmiya ich einen Code geändert und setzen, was Sie wriete aber die ganze Zeit sehe ich einen Fehler –
@IntelliJAmiya jetzt sehe ich diese: java.lang.NullPointerException: der Versuch, virtuelle Methode aufzurufen ‚android.gr aphics.drawable.Drawable.mutate() ' –
hier den vollständigen Code hier eingeben –