Reputation: 1

scrollview not working at all on Android

Here's the code of usermain.xml I tried so many combinations of android:layout_height="", the scroll bar symbol appears, but when I try to drag it down, it's not moving at all. How can I make it work? do I need to add something in the manifest or usermain.java?

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <RadioGroup
        android:id="@+id/radioclass"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <RadioButton
            android:id="@+id/radioButton2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:layout_marginTop="20dp"
            android:text="Round trip" />

        <RadioButton
            android:id="@+id/radioButton1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="One way" />
    </RadioGroup>

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
                 android:text="Leaving from"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Going to"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Spinner
        android:id="@+id/spinner2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Departure date"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <DatePicker
        android:id="@+id/dtpicker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Age"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Spinner
        android:id="@+id/spinner3"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginRight="5dp"
        android:entries="@array/Age" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>

</ScrollView>

Upvotes: 0

Answers (4)

mohsin raza

Reputation: 665

you forgot to close ScrollView at end .. just close it ..

java class

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main); // activity_main your xml layout
// now i test on device its work perfectly , comment your other functionality and test it 
    }

xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/scrollView1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:fillViewport="true" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >

        <RadioGroup
            android:id="@+id/radioclass"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <RadioButton
                android:id="@+id/radioButton2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="5dp"
                android:layout_marginTop="20dp"
                android:text="Round trip" />

            <RadioButton
                android:id="@+id/radioButton1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="5dp"
                android:text="One way" />
        </RadioGroup>

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="Leaving from"
            android:textAppearance="?android:attr/textAppearanceSmall" />

        <Spinner
            android:id="@+id/spinner1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp" />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="Going to"
            android:textAppearance="?android:attr/textAppearanceSmall" />

        <Spinner
            android:id="@+id/spinner2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp" />

        <TextView
            android:id="@+id/textView3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="Departure date"
            android:textAppearance="?android:attr/textAppearanceSmall" />

        <DatePicker
            android:id="@+id/dtpicker"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp" />

        <TextView
            android:id="@+id/textView4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="Age"
            android:textAppearance="?android:attr/textAppearanceSmall" />

        <Spinner
            android:id="@+id/spinner3"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginRight="5dp"
             />

        <TextView
            android:id="@+id/textView5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="Class"
            android:textAppearance="?android:attr/textAppearanceLarge" />

        <TextView
            android:id="@+id/textView6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="Class"
            android:textAppearance="?android:attr/textAppearanceLarge" />

        <TextView
            android:id="@+id/textView7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="Class"
            android:textAppearance="?android:attr/textAppearanceLarge" />
    </LinearLayout>

</ScrollView>

Upvotes: 0

jagmohan

Reputation: 2052

You are using a DatePicker in the layout. DatePicker takes the focus and prevents ScrollView from scrolling and it might happen that ScrollView scrolls and your are unable to scroll and pick values from DatePicker.

A better approach would be to add new element like TextView and show DatePicker inside a popup or a dialog on the click of this element. You can pick data/time and show the picked value in that element.

And, if you want to keep DatePicker inside the layout, you will need a custom ScrollView which overrides the default behaviour of ScrollView to stop the scrolling if some other View wants to capture the touch event like DatePicker in your case.

I had a similar use case in one of my past projects and I modified the ScrollView as follows

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ScrollView;

/**
 * LockableScrollView can used to stop the
 * scrolling if some other view wants to capture the touch event.
 * 
 */
public class LockableScrollView extends ScrollView {

    private boolean scrollable;

    public LockableScrollView(Context context) {
        super(context);
        scrollable = true;
    }

    public LockableScrollView(Context context, AttributeSet attributeSet) {
        super(context, attributeSet);
        scrollable = true;
    }

    public boolean isScrollable() {
        return scrollable;
    }

    public void setScrollable(boolean scrollable) {
        this.scrollable = scrollable;
    }

    @Override
    public boolean onTouchEvent(MotionEvent motionEvent) {
        switch (motionEvent.getAction()) {
            case MotionEvent.ACTION_DOWN:
                // if we can scroll pass the event to the superclass
                if (isScrollable()) { return super.onTouchEvent(motionEvent); }
                // only continue to handle the touch event if scrolling enabled
                return scrollable; // mScrollable is always false at this point
            default:
                return super.onTouchEvent(motionEvent);
        }
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        // Don't do anything with intercepted touch events if
        // we are not scrollable
        if (!isScrollable())
            return false;
        else
            return super.onInterceptTouchEvent(ev);
    }
}

Next, modify the layout xml to custom LockableScrollView

<?xml version="1.0" encoding="utf-8"?>
<your.package.name.to.LockableScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/sv_lockable"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="16dp" >

        <DatePicker
            android:id="@+id/date_picker"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp" />

    </LinearLayout>
</your.package.name.to.LockableScrollView>

Next, override the dispatchTouchEvent method in the Activity as follows to stop the scrolling of LockableScrollView. It is make the DatePicker capture touch events and allow its smooth scrolling.

public class YourActivity extends Activity {

    private LockableScrollView lockableScrollView;
    private DatePicker datePicker;
    private Rect startRect

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_time_question);
        ...
        lockableScrollView = (LockableScrollView) findViewById(R.id.sv_lockable);
        datePicker = (DatePicker) findViewById(R.id.date_picker);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent motionEvent) {
        final int x = (int) motionEvent.getRawX();
        final int y = (int) motionEvent.getRawY();
        dataPicker.getGlobalVisibleRect(startRect);
        if (dataPicker.contains(x, y)) {
            lockableScrollView.setScrollable(false);
        } else {
            lockableScrollView.setScrollable(true);
        }
        return super.dispatchTouchEvent(motionEvent);
    }
}

I have tried to explain as much as I could while trying to not write a long answer. Please let me know if you have any questions.

Hope this helps.

Upvotes: 1

Hradesh Kumar

Reputation: 1805

Hey, Try this code.May it help you.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >



    <ScrollView android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        >
        <LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <RadioGroup
        android:id="@+id/radioclass"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <RadioButton
            android:id="@+id/radioButton2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:layout_marginTop="20dp"
            android:text="Round trip" />

        <RadioButton
            android:id="@+id/radioButton1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="One way" />
    </RadioGroup>

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
                 android:text="Leaving from"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Going to"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Spinner
        android:id="@+id/spinner2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Departure date"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <DatePicker
        android:id="@+id/dtpicker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Age"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Spinner
        android:id="@+id/spinner3"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginRight="5dp"
        android:entries="@array/Age" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>

    </ScrollView>
</LinearLayout>

If not work fine in your case then let me know.

Upvotes: 0

Junaid

Reputation: 7860

Try this:

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <RadioGroup
        android:id="@+id/radioclass"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <RadioButton
            android:id="@+id/radioButton2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:layout_marginTop="20dp"
            android:text="Round trip" />

        <RadioButton
            android:id="@+id/radioButton1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="One way" />
    </RadioGroup>

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Leaving from"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Going to"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Spinner
        android:id="@+id/spinner2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Departure date"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <DatePicker
        android:id="@+id/dtpicker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Age"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Spinner
        android:id="@+id/spinner3"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginRight="5dp"
        android:entries="@array/Age" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:text="Class"
        android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>

Upvotes: 0

scrollview not working at all on Android

Answers (4)

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