app development

Steven Spiegel · Aug 10, 2018

I am developing an app. Wish for it to scroll <ScrollView> code not working. Can anyone help me please?
I can upload my content_main.xml file.

kate · Aug 10, 2018

Welcome to the site!

I moved your thread to the dev forum. :thumbsupdroid:

Also check out this post for dev questions:
https://androidforums.com/threads/please-read-me-before-posting.987318/

Steven Spiegel · Aug 11, 2018

thanks Kate. the place you put it is more appropriate.

Deleted User · Aug 11, 2018

Need to see your code, and you need to explain what you mean by "not working".

Steven Spiegel · Aug 12, 2018

thanks so much for willing to help me. the code will follow. this xml file with the modifications I did will not open.
my intent is to have full vertical scroll.
now the code:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
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

addingBottom="@dimen/activity_vertical_margin"
android

addingLeft="@dimen/activity_horizontal_margin"
android

addingRight="@dimen/activity_horizontal_margin"
android

addingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@String/appbar_scrolling_view_behavior"
tools:context="com.cancunsteve.aboutcancunsteve.MainActivity"
tools:showIn="@layout/activity_main">

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/scrollView"
android:layout_alignParentStart="true"
android:layout_marginTop="56dp" />
<ImageView android:id="@+id/imageView"
android:layout_column="1"
android:background="@Mipmap/lpussy"
android:contentDescription='android:ContentDescription="@String/desc"'
tools:ignore="HardcodedText"
android:layout_width="200dp"
android:layout_height="230dp" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" We've been serving good people with special deals. "
android:id="@+id/text1"
android:layout_alignTop="@+id/imageView"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:background="#ffffff"
android:foreground="#05ffffff"
android:foregroundTint="#03ffffff"
android:textColor="#000000" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editText2"
android:text="Cancun, Playa del Carmen"
android:layout_below="@+id/text1"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editText"
android:text="Holbox, Taxco, Palenque"
android:layout_below="@+id/editText2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />

<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageButton"
android:layout_below="@+id/editText3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:background="@Mipmap/campa"
tools:ignore="ContentDescription"
android:layout_alignBottom="@+id/editText5" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:ems="10"
android:id="@+id/editText3"
android:text="thewebmaster@cancunsteve.com"
android:layout_below="@+id/editText"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignRight="@+id/editText"
android:layout_alignEnd="@+id/editText" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="phone"
android:ems="10"
android:id="@+id/editText4"
android:text=" 011 52 998 8873919"
android:layout_below="@+id/editText3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="42dp"
android:layout_marginStart="32dp" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editText5"
android:text="be sure to visit us for up to 55% discounts on your hotel bookings"
android:layout_below="@+id/editText4"
android:layout_toRightOf="@+id/scrollView"
android:layout_toEndOf="@+id/scrollView" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="click buttons multiple times to change state"
android:id="@+id/textView2"
android:layout_below="@+id/imageButton" />

</LinearLayout>
</ScrollView>

</RelativeLayout>

wseng92 · Aug 15, 2018

You have closed Linear Layout tag

Code:

android:layout_height="230dp" />

The correct should be

Code:

android:layout_height="230dp" >

Steven Spiegel · Aug 16, 2018

taking out the backshlash did not work but thanks.
the file opens now with this code below, BUT DOES NOT SCROLL
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
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

addingBottom="@dimen/activity_vertical_margin"
android

addingLeft="@dimen/activity_horizontal_margin"
android

addingRight="@dimen/activity_horizontal_margin"
android

addingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@String/appbar_scrolling_view_behavior"
tools:context="com.cancunsteve.aboutcancunsteve.MainActivity"
tools:showIn="@layout/activity_main">

<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android

rientation="vertical" >

<RelativeLayout
android:id="@+id/scrollView"
android:layout_alignParentStart="true"
android:layout_marginTop="56dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ImageView android:id="@+id/imageView"
android:layout_column="1"
android:background="@Mipmap/lpussy"
android:contentDescription='android:ContentDescription="@String/desc"'
tools:ignore="HardcodedText"
android:layout_width="200dp"
android:layout_height="230dp" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" We've been serving good people like you since 1994 with special deals on their travel plans. "
android:id="@+id/text1"
android:layout_alignTop="@+id/imageView"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:background="#ffffff"
android:foreground="#05ffffff"
android:foregroundTint="#03ffffff"
android:textColor="#000000" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editText2"
android:text="Cancun, Playa del Carmen, Tulum, Cozumel, Isla Mujeres, Merida, Valladolid, Chichen Itza."
android:layout_below="@+id/text1"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editText"
android:text="Holbox, Taxco, Palenque, Acapulco, Ixtapa, Guanajuato, Guadalajara, Mexico City, Cabo San Lucas, Puerto Vallarta, Monterrey, Tenacatita, Mascota"
android:layout_below="@+id/editText2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />

<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageButton"
android:layout_below="@+id/editText3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:background="@Mipmap/campa"
tools:ignore="ContentDescription"
android:layout_alignBottom="@+id/editText5" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:ems="10"
android:id="@+id/editText3"
android:text="thewebmaster@cancunsteve.com"
android:layout_below="@+id/editText"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignRight="@+id/editText"
android:layout_alignEnd="@+id/editText" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="phone"
android:ems="10"
android:id="@+id/editText4"
android:text=" 011 52 998 8873919"
android:layout_below="@+id/editText3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="42dp"
android:layout_marginStart="32dp" />

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editText5"
android:text="be sure to visit us at www.cancunsteve.com for up to 65% discounts on your hotel bookings"
android:layout_below="@+id/editText4"
android:layout_toRightOf="@+id/ScrollView"
android:layout_toEndOf="@+id/ScrollView" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="click buttons multiple times to change state"
android:id="@+id/textView2"
android:layout_below="@+id/imageButton" />

</RelativeLayout>
</ScrollView>

Steven Spiegel · Aug 21, 2018

in the mainactivity.java file below getting errors when attempting to build app
please help me fix errors.

Code:

public class MainActivity extends AppCompatActivity {
    private Button mButton;
    [USER=1021285]@override[/USER]
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button activityButton = (Button) findViewById(R.id.button_quiz);
        activity@Button.setOnClick(value = new OnClickListener(),
                toolbar = (Toolbar) findViewById(R.id.toolbar), setSupportActionBar = (toolbar), mButton = (Button) findViewById(R.id.button_quiz), mButton =, setOnClickListener = (new OnClickListener() {
            [USER=1021285]@override[/USER]
            public void onClick(View view) {
                //open url using Intent
                String url = "http://www.cancunsteve.com/capecod/mobilepopquiz2.htm";
                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));


            }
        }

wseng92 · Aug 21, 2018

What errors you getting?

Steven Spiegel · Aug 21, 2018

what errors am I not getting!
OnClickListener is abstract cannot be instantiated
cannot resolve activity (this refers to activity@Button)
in find ViewById(R.id.toolbar) it says attribute value must be constant
")" expected (where I have two } )
; expected (same place)

is there any hope??????????

Deleted User · Aug 21, 2018

Your code has so many problems, I don't know where to start. Well let's begin with this

Code:

activity@Button

If you can't see why that's a problem, stop coding now, and pick up the first book you find on Java, and start reading. If you're doing cut/paste coding, then try to understand the code you're using. Otherwise you'll have endless problems, and you'll never achieve anything.

So tell me, what do you think that statement at line 9 is trying to do?

kate · Aug 21, 2018

Lines 4 and 11 got messed up by the forum auto-linking to a user name with USER.

@Steven Spiegel when you post code use code tags:

[code]
Your
code
here
[/code]

Steven Spiegel · Aug 21, 2018

the click listener is to know if the button is activated (clicked) this button loads the url in question
not sure why it calls a new click listener though
will follow your advice for posting code
bought an expensive book on android coding but it explains more to open new activity
if all else fails will go that route

Deleted User · Aug 22, 2018

Steven Spiegel said:
the click listener is to know if the button is activated (clicked) this button loads the url in question
not sure why it calls a new click listener though
will follow your advice for posting code
bought an expensive book on android coding but it explains more to open new activity
if all else fails will go that route

However expensive the book you bought, I'll bet it doesn't explain the basics of the Java programming language.
You need to do the foundation work before you can build the house.

Steven Spiegel · Aug 22, 2018

thanks for your help

wseng92 · Aug 22, 2018

Code:

[USER=1021285]@override[/USER]

@Override not @override

Steven Spiegel · Aug 22, 2018

thanks will try

Steven Spiegel · Aug 29, 2018

have two errors stemming from the manifest when trying to compile.
my mainactivity.java is fine I believe.
the errors are cannot find activity class NewActivity2. cannot find symbol variable activity_main
manifest below:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.cancunsteve.aboutcancunsteve"
android:installLocation="preferExternal">

<uses-sdk android:minSdkVersion="19" />

<application
android:allowBackup="true"
android:icon="@Mipmap/appicon"
android:label="@String/app_name"
android:supportsRtl="true"
android:theme="@Style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@String/app_name"
android:theme="@Style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".NewActivity2"
android:label="@String/title_activity_main2"
android

arentActivityName=".MainActivity"
android:theme="@Style/AppTheme.NoActionBar">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.cancunsteve.aboutcancunsteve.MainActivity" />
</activity>
</application>

</manifest>

wseng92 · Aug 29, 2018

Did your MainActivity java class extend to AppCompatActivity ?

Steven Spiegel · Aug 30, 2018

believe so here is an excerpt (hope I did it correctly)

Code:

public class MainActivity extends AppCompatActivity {
    Button button;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // Get the view from activity_main.xml
        setContentView(R.layout.activity_main);

        // Locate the button in activity_main.xml
        button = (Button) findViewById(R.id.MyButton);

        // Capture button clicks
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View arg0) {

                // Start NewActivity.class
                Intent myIntent = new Intent(MainActivity.this,
                        NewActivity2.class);
                startActivity(myIntent);
            }
        });
    }

wseng92 · Aug 30, 2018

MainActivity java class looked good.

Look at this errors again

the errors are cannot find activity class NewActivity2. cannot find symbol variable activity_main

Do you have NewActivity2 java class ?
If yes, did the class extends to AppCompatActivity ?

Deleted User · Aug 30, 2018

Steven Spiegel said:
android:name=".NewActivity2"

Use the full package name of this class.

Steven Spiegel · Aug 30, 2018

in my mainactivity.java I do not have NewActivity2 java class. nor am I sure the correct way to enter it correctly
now I have

Code:

public class MainActivity extends AppCompatActivity {
    Button button;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // Get the view from activity_main.xml
        setContentView(R.layout.activity_main);

        // Locate the button in activity_main.xml
        button = (Button) findViewById(R.id.MyButton);

        // Capture button clicks
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View arg0) {

                // Start NewActivity.class
                Intent myIntent = new Intent(MainActivity.this,
                        NewActivity2.class);
                startActivity(myIntent);
            }
        });
    }

should I put public class NewActivity2 extends AppCompatActivity {
Button button;
then all the same code after @override as above? not sure?

wseng92 · Aug 30, 2018

When button in MainActivity is clicked, it should open NewActivity2 (that's what I can see from your code).
So you have to create NewActivity2 class and do whatever you want in that class.

Steven Spiegel · Aug 30, 2018

I just want the NewActivity2.class to open and display the content of activity_main2.xml but not sure the correct coding for that

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