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POandroid Swipe event in listview inside tab widget
 

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  1. POandroid Swipe event in listview inside tab widget
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    <p>I have created an Activity that shows a listview and on swipe action another list is shown using ViewFlipper. The code is attached below:</p> <pre><code>import android.app.Activity; import android.os.Bundle; import android.view.GestureDetector; import android.view.GestureDetector.SimpleOnGestureListener; import android.view.MotionEvent; import android.view.View; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.Toast; import android.widget.ViewFlipper; import android.widget.AdapterView.OnItemClickListener; public class MainActivity extends Activity { private static final int SWIPE_MIN_DISTANCE = 120; private static final int SWIPE_MAX_OFF_PATH = 250; private static final int SWIPE_THRESHOLD_VELOCITY = 200; private GestureDetector gestureDetector; View.OnTouchListener gestureListener; private Animation slideLeftIn; private Animation slideLeftOut; private Animation slideRightIn; private Animation slideRightOut; private ViewFlipper viewFlipper; private ListView lv; private String[] city = { "Indore", "Bhopal", "Khargone", "Ujjain", "Nasik", "Pune", "Delhi", "Mumbai", "Noida", "Hyderabad", "Banglore", "Ajmer", "Goa", "Jaipur", "Nagpur", "" }; private String[] country = { "India", "Bhutan", "Kuwait", "USA", }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main_layout); lv = (ListView) findViewById(R.id.List01); ListView lv2 = (ListView) findViewById(R.id.List02); viewFlipper = (ViewFlipper) findViewById(R.id.flipper); slideLeftIn = AnimationUtils.loadAnimation(this, R.anim.slide_left_in); slideLeftOut = AnimationUtils .loadAnimation(this, R.anim.slide_left_out); slideRightIn = AnimationUtils .loadAnimation(this, R.anim.slide_right_in); slideRightOut = AnimationUtils.loadAnimation(this, R.anim.slide_right_out); gestureDetector = new GestureDetector(new MyGestureDetector()); gestureListener = new View.OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { if (gestureDetector.onTouchEvent(event)) { return true; } return false; } }; lv.setAdapter(new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, city)); lv2.setAdapter(new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, country)); lv.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView arg0, View view, int position, long id) { // user clicked a list item, make it "selected" Toast.makeText(getBaseContext(), "Item Clicked", Toast.LENGTH_SHORT).show(); // selectedAdapter.setSelectedPosition(position); } }); lv2.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView arg0, View view, int position, long id) { // user clicked a list item, make it "selected" Toast.makeText(getBaseContext(), "Item List2 Clicked", Toast.LENGTH_SHORT).show(); // selectedAdapter.setSelectedPosition(position); } }); } class MyGestureDetector extends SimpleOnGestureListener { @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { try { if (Math.abs(e1.getY() - e2.getY()) &gt; SWIPE_MAX_OFF_PATH) return false; // right to left swipe if (e1.getX() - e2.getX() &gt; SWIPE_MIN_DISTANCE &amp;&amp; Math.abs(velocityX) &gt; SWIPE_THRESHOLD_VELOCITY) { viewFlipper.setInAnimation(slideLeftIn); viewFlipper.setOutAnimation(slideLeftOut); viewFlipper.showNext(); } else if (e2.getX() - e1.getX() &gt; SWIPE_MIN_DISTANCE &amp;&amp; Math.abs(velocityX) &gt; SWIPE_THRESHOLD_VELOCITY) { viewFlipper.setInAnimation(slideRightIn); viewFlipper.setOutAnimation(slideRightOut); viewFlipper.showPrevious(); } } catch (Exception e) { // nothing } return false; } } @Override public boolean onTouchEvent(MotionEvent event) { if (gestureDetector.onTouchEvent(event)) return true; else return false; } } </code></pre> <p>It's working f9...</p> <p>But when I place this within the another tab activity with the following code <strong>The View Flipper is not working when placed as content(intent) in tab of another tabactivity (AppStart)</strong></p> <pre><code>import android.app.TabActivity; import android.content.Intent; import android.content.res.Resources; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.widget.TabHost; public class AppStart extends TabActivity { /** Called when the activity is first created. */ static Drawable myImage; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Resources res = getResources(); myImage = res.getDrawable(R.drawable.club); TabHost tabs = getTabHost(); tabs.setup(); TabHost.TabSpec spec = tabs.newTabSpec(null); Intent i = new Intent().setClass(this, MainActivity.class); spec = tabs.newTabSpec(null); spec.setContent(i); spec.setIndicator("Tab"); tabs.addTab(spec); } } </code></pre> <p>The Layout is as follows: main_layout.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;ViewFlipper xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/flipper" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;ListView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/List01"/&gt; &lt;/LinearLayout&gt; &lt;LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;ListView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/List02" /&gt; &lt;/LinearLayout&gt; &lt;/ViewFlipper&gt; </code></pre> <p>And main.xml as shown below:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" /&gt; &lt;FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;/FrameLayout&gt; &lt;/LinearLayout&gt; &lt;/TabHost&gt; </code></pre> <p>Please suggest why the swipe gesture is not working when the same activity is placed in tab.</p> <p>Thank You</p>
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    1. COWhile I haven't looked at your code nor specifically handled swipes with a similar layout, I can say the approach I'd take to figure this out would be to inspect the chain of onClick and onTouch handling through your entire layout, using logging and/or breakpoints, to understand what's handling what and when, i.e., in what order. Then, I'd probably insert custom onClick and/or onTouch handling as appropriate to get the result I wanted.
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    2. COOh, yeah. And I'd trace the dispatchTouchEvent calls.
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    3. COwhat is flipBarBottom in the above code ?
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