- Forum posts: 1
Apr 18, 2017, 1:36:29 PM via Website
Apr 18, 2017 1:36:29 PM via Website
I asked a question on Stackoverflow however nobody answered it. So i asked the same question here.
Its question topic is the same in the stackoverflow. Since i'm new i couldn't share the link here now.
I copy paste it below :
I developed a bottom sheet with the source codes shown below. However, when i change state of bottom sheet(by changing its state collapsed, expanded, or hide) onStateChanged and onSlide method is called forever. I don't understand why. Is this behaviour normal?
MainActivity.java
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private BottomSheetBehavior mBottomSheetBehavior;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
View bottomSheet = findViewById( R.id.bottom_sheet );
Button button1 = (Button) findViewById( R.id.button_1 );
Button button2 = (Button) findViewById( R.id.button_2 );
Button button3 = (Button) findViewById( R.id.button_3 );
button1.setOnClickListener(this);
button2.setOnClickListener(this);
button3.setOnClickListener(this);
mBottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);
mBottomSheetBehavior.setHideable(true);
mBottomSheetBehavior.setPeekHeight(300);
//mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
mBottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
@Override
public void onStateChanged(View bottomSheet, int newState) {
Toast.makeText(getApplicationContext(), "onStateChanged() is called.", Toast.LENGTH_SHORT).show();
// this method is called forever i dont understand why???
}
@Override
public void onSlide(View bottomSheet, float slideOffset) {
Toast.makeText(getApplicationContext(), "onStateChanged() is called. in onSlide()", Toast.LENGTH_SHORT).show();
// this method is also called forever i dont understand why???
}
});
}
@Override
public void onClick(View v) {
switch( v.getId() ) {
case R.id.button_1: {
mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
break;
}
case R.id.button_2: {
mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
break;
}
case R.id.button_3: {
mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
break;
}
}
}
}
activity_main.xml
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingTop="24dp">
<Button
android:id="@+id/button_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button 1"
android:padding="16dp"
android:layout_margin="8dp"
android:textColor="@android:color/white"
android:background="@android:color/holo_green_dark"/>
<Button
android:id="@+id/button_2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp"
android:layout_margin="8dp"
android:text="Button 2"
android:textColor="@android:color/white"
android:background="@android:color/holo_blue_light"/>
<Button
android:id="@+id/button_3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp"
android:layout_margin="8dp"
android:text="Button 3"
android:textColor="@android:color/white"
android:background="@android:color/holo_red_dark"/>
</LinearLayout>
</ScrollView>
<android.support.v4.widget.NestedScrollView
android:id="@+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="350dp"
android:clipToPadding="true"
android:background="@android:color/holo_orange_light"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="@string/ipsum"
android:padding="16dp"
android:textSize="16sp"/>
</android.support.v4.widget.NestedScrollView>
Thanks in advance...
sas
— modified on Apr 18, 2017, 1:39:19 PM