I need to make two buttons appear when I slide an item from ListView
to the left. I even managed to do that, but it's pretty ugly. I would like them to appear as if they are being pulled from the right corner of the screen, same in the Gmail app.
My code:
items from ListView
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/relativelayout">
<ImageButton
android:layout_width="60dp"
android:layout_height="65dp"
android:background="@color/vermelho"
android:src="@drawable/lixobotao"
android:id="@+id/btnexcluir"
android:layout_alignParentTop="true"
android:layout_toStartOf="@+id/btnfavorito"
android:visibility="invisible"/>
<ImageButton
android:layout_width="60dp"
android:layout_height="65dp"
android:background="@color/amarelo"
android:src="@drawable/estrelabotao"
android:id="@+id/btnfavorito"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:visibility="invisible" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/primary_text"
android:id="@+id/nomelista"
android:textSize="20dp"
android:text="nomelista"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/secondary_text"
android:id="@+id/datalista"
android:textSize="15dp"
android:text="datalista"
android:layout_below="@+id/nomelista"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/secondary_text"
android:id="@+id/precolista"
android:textSize="15dp"
android:text="precolista"
android:layout_below="@+id/datalista"
android:layout_alignStart="@+id/datalista" />
</RelativeLayout>
Activity:
@Override
protected void onCreate(Bundle savedInstanceStade){
super.onCreate(savedInstanceStade);
setContentView(R.layout.minhas_listas);
inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
a = new AdaptadorListas(listasCompra,this);
listas = (ListView) findViewById(R.id.listaListas);
Button novaLista = (Button) findViewById(R.id.novalista);
listas.setAdapter(a);
final SwipeDetector swipeDetector= new SwipeDetector();
listas.setOnTouchListener(swipeDetector);
listas.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if(swipeDetector.swipeDetected()){
if(swipeDetector.getAction() == Action.RL){
ImageButton addfav = (ImageButton) view.findViewById(R.id.btnfavorito);
ImageButton excluir = (ImageButton) view.findViewById(R.id.btnexcluir);
addfav.setVisibility(View.VISIBLE);
excluir.setVisibility(View.VISIBLE);
}
}
}
});
SwipeDetector.java:
public class SwipeDetector implements View.OnTouchListener {
public static enum Action {
LR, // Left to Right
RL, // Right to Left
TB, // Top to bottom
BT, // Bottom to Top
None // when no action was detected
}
private static final String logTag = "SwipeDetector";
private static final int MIN_DISTANCE = 100;
private float downX, downY, upX, upY;
private Action mSwipeDetected = Action.None;
public boolean swipeDetected() {
return mSwipeDetected != Action.None;
}
public Action getAction() {
return mSwipeDetected;
}
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN: {
downX = event.getX();
downY = event.getY();
mSwipeDetected = Action.None;
return false; // allow other events like Click to be processed
}
case MotionEvent.ACTION_MOVE: {
upX = event.getX();
upY = event.getY();
float deltaX = downX - upX;
float deltaY = downY - upY;
// horizontal swipe detection
if (Math.abs(deltaX) > MIN_DISTANCE) {
// left or right
if (deltaX < 0) {
Log.i(logTag, "Swipe Left to Right");
mSwipeDetected = Action.LR;
return true;
}
if (deltaX > 0) {
Log.i(logTag, "Swipe Right to Left");
mSwipeDetected = Action.RL;
return true;
}
} else
// vertical swipe detection
if (Math.abs(deltaY) > MIN_DISTANCE) {
// top or down
if (deltaY < 0) {
Log.i(logTag, "Swipe Top to Bottom");
mSwipeDetected = Action.TB;
return false;
}
if (deltaY > 0) {
Log.i(logTag, "Swipe Bottom to Top");
mSwipeDetected = Action.BT;
return false;
}
}
return true;
}
}
return false;
}
}
I wish it were like this, with this effect when you slip:
WhenIswipeleftinmyapplicationthebuttonsappearbutwithnoeffectwhatsoever,theysimply"pop up" on the right side of the screen.