Ask for help, the android activity of the title how didn't-CodePudding

According to the existing code is copied, before the title on the top displays the currently selected options, but do not know how the they don't have a

CodePudding user response:

Will you look complete code posted the activity

CodePudding user response:

Have you ever used setTitle this way? Your activity references to see them get rid of the title

CodePudding user response:

refer to the second floor Ande Wang reply:

you have used this method setTitle? Your activity references to see them get rid of the title

used Settitle, what do you think the theme of reference

CodePudding user response:

reference 1st floor zhang106209 response:

to your post and see the complete code of all the activity

package com. Example. Myapplication51;

The import android. App. The Activity;
The import android. OS. Bundle;
The import android. View. The view;
The import android. Widget. AdapterView;
The import android. Widget. ArrayAdapter;
The import android. Widget. The Button;
The import android. Widget. ListView.
The import android. Widget. TextView;

Public class MainActivity extends the Activity {
Private TextView txtResult;
Private String m="";
Private TextView tm;
Private ListView lstPrefer;
Private Button btnDo;
String [] Fruits=new String [] {5 yuan "apple", "orange 3 yuan", "banana 2 yuan"};
int count;

@ Override
Public void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
The setContentView (R.l ayout. Activity_main);

//resources category in the file interface components
BtnDo=(Button) the findViewById (R.i db tnDo);
TxtResult=(TextView) the findViewById (R.i which xtResult);
Tm=(TextView) the findViewById (R.i which m);
LstPrefer=(ListView) the findViewById (R.i d.l stPrefer);

//to multi-select template ArrayAdapter
ArrayAdapter AdapterBalls=new ArrayAdapter (this,
Android. R.l ayout simple_list_item_multiple_choice, Fruits);

LstPrefer. SetChoiceMode (ListView. CHOICE_MODE_MULTIPLE);//set the multiselect

//set the ListView data
LstPrefer. SetAdapter (adapterBalls);

Count=adapterBalls. GetCount ();//select project total

//set button component Click event listener for btnDoListener
BtnDo. SetOnClickListener (btnDoListener);

//set lstPrefer component ItemClick event listener for lstPreferListener
LstPrefer. SetOnItemClickListener (lstPreferListener);

}

//define the onClick () method
Private Button. An OnClickListener btnDoListener=new Button. An OnClickListener () {
Public void onClick (View v) {
String selAll="";
For (int p=0; P & lt; count; P++) {
If (lstPrefer. IsItemChecked (p))
SelAll +=Fruits [p] + "";
}
If (selAll. Equals (5 yuan "apple")) {
M=5 yuan ";
} else if (selAll equals (" orange 3 yuan ")) {
M="a total of 3 yuan";
} else if (selAll equals (" banana 2 yuan ")) {
M="$2";
} else if (selAll equals (5 yuan "apple" + "orange 3 yuan")) {
M="8 yuan";
} else if (selAll equals (5 yuan "apple" + "banana 2 yuan")) {
M="7 yuan";
} else if (selAll equals (" banana 2 yuan "+" orange 3 yuan ")) {
M=5 yuan ";
} else if (selAll equals (5 yuan "apple" + "orange 3 yuan" + "banana 2 yuan")) {
M="10 yuan";
}
TxtResult. SetText (" selected fruit: "+ selAll);

Tm. SetText (" total amount "+ m);

}
};

//definition onItemClick method
Private ListView. OnItemClickListener lstPreferListener=
New ListView. OnItemClickListener () {
@ Override
Public void onItemClick (AdapterView<?> The parent View v,
Int position, long id) {
If (lstPrefer isItemChecked (position)) {//check
String sel=parent. GetItemAtPosition (position). The toString ();
SetTitle (" the choice: "+ sel);

} else {
SetTitle (" the choice: ");
}

}

};

CodePudding user response:

Quote: refer to the third floor weixin_44900828 response:

In the androidmanifest.xml android: theme="@ style/AppTheme"
CodePudding user response:
<style name="AppTheme" parent "=" Theme. AppCompat. Light. DarkActionBar "& gt;

<style name="transparent" parent "=" Theme. AppCompat. Light. NoActionBar "& gt; This is not the title of the custom style style
CodePudding user response:
f Ande reference Wang reply:
& lt; Style name="AppTheme" parent "=" Theme. AppCompat. Light. DarkActionBar "& gt;

<style name="transparent" parent "=" Theme. AppCompat. Light. NoActionBar "& gt; This is not the title of the custom style style

I the inside have no the ah
CodePudding user response:
Your AndroidManifest. XML and style. The XML file to

CodePudding user response:
You change MainActivity inherited Activity to AppCompatActivity
CodePudding user response:
Now is not inherited AppCompatActivity, inherit the Activity all don't know is a few years ago