Koj cov lus nug: Kuv yuav ua li cas thiaj li teeb tsa lub toolbar ntawm Android?

Yuav ua li cas kuv thiaj li tau lub default toolbar?

Yog tias koj cov ntaub ntawv java txuas ntxiv AppCompatActivity, koj tuaj yeem siv getSupportActionBar() hu rau ActionBar. Java cov ntaub ntawv uas txuas ntxiv Kev Ua Haujlwm xav tau getActionBar() hu rau toolbar. Tom qab ntawd koj tuaj yeem ua haujlwm xws li hloov cov ntawv sau / npe, keeb kwm yav dhau los, nrog rau lwm yam haujlwm.

Yuav ua li cas kho kuv lub cuab yeej Android?

Ib lub ntsej muag ntawm peb cov ntaub ntawv MainActivity.java:

1. pej xeem chav MainActivity txuas ntxiv AppCompatActivity {
2. private void configureToolbar(){
3. // Tau qhov toolbar saib hauv qhov kev ua si layout.
4. Toolbar toolbar = (Toolbar) findViewById(R. id. toolbar);
5. // Teem lub Toolbar.
6. setSupportActionBar(toolbar);

Yuav ua li cas kom tau txais toolbar ntawm kuv Android?

Android Toolbar rau AppCompatActivity

1. Kauj ruam 1: Tshawb xyuas Gradle dependencies. …
2. Kauj ruam 2: Hloov kho koj cov ntaub ntawv layout.xml thiab ntxiv cov qauv tshiab. …
3. Kauj ruam 3: Ntxiv cov ntawv qhia zaub mov rau lub toolbar. …
4. Kauj ruam 4: Ntxiv toolbar rau cov dej num. …
5. Kauj ruam 5: Inflate (Ntxiv) cov ntawv qhia zaub mov rau lub toolbar.

Dab tsi yog toolbar hauv Android?

android.widget.Toolbar. Tus txheej txheem toolbar siv rau hauv daim ntawv thov cov ntsiab lus. Ib Toolbar yog ib tug generalization ntawm action tuav rau siv nyob rau hauv daim ntawv thov layouts.

Kuv yuav kho kuv cov ntawv qhia zaub mov hauv Android li cas?

Txhawm rau hloov kho koj cov ntawv qhia zaub mov ceev, koj yuav tsum qhib koj lub xov tooj.

1. Luag los ntawm cov ntawv qhia luv luv mus rau lub tais nthuav dav.
2. Coj mus rhaub rau ntawm tus cwj mem icon.
3. Tom qab ntawd koj yuav pom Edit menu.
4. Ntev-nias (kov cov khoom kom txog thaum koj hnov ​​​​cov lus tawm tswv yim vibration) thiab tom qab ntawd luag thiaj li hloov pauv.

Kuv yuav kho cov teeb tsa ceev hauv Android li cas?

Los ntawm sab saum toj ntawm koj lub vijtsam, swipe down ob zaug. Hauv qab sab laug, coj mus rhaub Kho kom raug. Kov thiab tuav qhov chaw. Tom qab ntawd luag qhov chaw rau qhov koj xav tau.

Kuv yuav rov qab toolbar li cas?

Ua tau li no:

1. Nyem Saib (ntawm Windows, nias lub pob Alt ua ntej)
2. Xaiv Toolbars.
3. Nyem ib lub toolbar uas koj xav kom pab (piv txwv li, Bookmarks Toolbar)
4. Rov ua dua rau cov toolbars ntxiv yog tias xav tau.

Kuv yuav hloov cov ntawv toolbar li cas?

Mus rau lub app> res> qhov tseem ceeb> ntsiab> ntxhais. xml cov ntaub ntawv thiab ntxiv cov kab hauv qab no hauv lub tag. Hauv txoj haujlwm ntawm onCreate() txoj kev, hu rau kev ua haujlwm's setSupportActionBar() txoj kev, thiab dhau qhov kev ua ntawm toolbar. Txoj kev no teev cov toolbar raws li lub app bar rau cov dej num.

Dab tsi yog toolbar khawm?

Ib tug toolbar yog ib txheej ntawm cov cim lossis cov nyees khawm uas yog ib feem ntawm software program's interface lossis qhib qhov rais. … Piv txwv li, Web browsers, xws li Internet Explorer, muaj xws li ib tug toolbar nyob rau hauv txhua lub qhov rais qhib. Cov toolbars no muaj cov khoom xws li Back and Forward buttons, Home button, and a address fields.