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시나리오 : 나는 앱 서랍을 만들고 그 안에 SeekBar를 배치 한은 View 형에서 비 정적 메소드 setOnTouchListener (View.OnTouchListener)에 대한 정적 참조를 만들 수 없습니다
. 이 응용 프로그램 서랍은 app_drawer.xml에서 만들어지며 아래의 내 조각은 main_activity.xml에서 만들어집니다. 내가 찾던 문제는입니다.하지만 검색 표시 줄이 완벽하게 나타나고 앱 서랍을 끌어 당기거나 끌 때 아무 것도 일어나지 않습니다 (텍스트 뷰가 업데이트되지 않음). 비록 그것이해야한다.
나는 아래 말했다 수정,하지만 난 오류가 계속 봤는데 : 내가 오류를 제거하려면 어떻게
Cannot make a static reference to the non-static method setOnTouchListener(View.OnTouchListener) from the type View
를?
수정하여 제안 된 코드 :
public class MainActivity extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.main_activity, container, false);
View rootView2 = inflater.inflate(R.layout.app_drawer, container, false);
final SeekBar sk=(SeekBar) rootView2.findViewById(R.id.seekBar1);
SeekBar.setOnTouchListener(new WorkarroundFixMovementOnDrawer());
TextView textProgress = (TextView)rootView.findViewById(R.id.TextView01);
sk.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
public void onProgressChanged(SeekBar bar, int progress,
boolean fromUser) {
textProgress.setText("Progress: "+ String.valueOf(progress));
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
});
return rootView;
}
}
/**
* This is just a workarround for make seekbar work on drawer
*/
static class WorkarroundFixMovementOnDrawer implements View.OnTouchListener {
@Override
public boolean onTouch(View v, MotionEvent event) {
int action = event.getAction();
DrawerLayout parentDrawer = getParentDrawer(v);
switch (action) {
case MotionEvent.ACTION_DOWN:
// Disallow Drawer to intercept touch events.
if (parentDrawer != null) {
parentDrawer.requestDisallowInterceptTouchEvent(true);
}
break;
case MotionEvent.ACTION_UP:
// Allow Drawer to intercept touch events.
if (parentDrawer != null) {
parentDrawer.requestDisallowInterceptTouchEvent(false);
}
break;
}
// Handle seekbar touch events.
v.onTouchEvent(event);
return true;
}
/**
* Try to get DrawerLayout from parent
* @param view view to search
* @return the drawerLayout parent
*/
public static DrawerLayout getParentDrawer(View view) {
if (view != null) {
ViewParent recursiveView = view.getParent();
while (!(recursiveView instanceof DrawerLayout)) {
if (recursiveView == null) {
return null;
}
recursiveView = recursiveView.getParent();
}
return (DrawerLayout) recursiveView;
}
return null;
}
}
는 오리지널 코드 :
public class MainActivity extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.main_activity, container, false);
View rootView2 = inflater.inflate(R.layout.app_drawer, container, false);
final SeekBar sk=(SeekBar) rootView2.findViewById(R.id.seekBar1);
TextView textProgress = (TextView)rootView.findViewById(R.id.TextView01);
sk.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
public void onProgressChanged(SeekBar bar, int progress,
boolean fromUser) {
textProgress.setText("Progress: "+ String.valueOf(progress));
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
});
return rootView;
}
}
제안 수정 :
seekBar.setOnTouchListener(new WorkarroundFixMovementOnDrawer());
/**
* This is just a workarround for make seekbar work on drawer
*/
static class WorkarroundFixMovementOnDrawer implements View.OnTouchListener {
@Override
public boolean onTouch(View v, MotionEvent event) {
int action = event.getAction();
DrawerLayout parentDrawer = getParentDrawer(v);
switch (action) {
case MotionEvent.ACTION_DOWN:
// Disallow Drawer to intercept touch events.
if (parentDrawer != null) {
parentDrawer.requestDisallowInterceptTouchEvent(true);
}
break;
case MotionEvent.ACTION_UP:
// Allow Drawer to intercept touch events.
if (parentDrawer != null) {
parentDrawer.requestDisallowInterceptTouchEvent(false);
}
break;
}
// Handle seekbar touch events.
v.onTouchEvent(event);
return true;
}
/**
* Try to get DrawerLayout from parent
* @param view view to search
* @return the drawerLayout parent
*/
public static DrawerLayout getParentDrawer(View view) {
if (view != null) {
ViewParent recursiveView = view.getParent();
while (!(recursiveView instanceof DrawerLayout)) {
if (recursiveView == null) {
return null;
}
recursiveView = recursiveView.getParent();
}
return (DrawerLayout) recursiveView;
}
return null;
}
}
에
와 개체를 추가하면 원래의 코드에 이것을 추가합니다. 문제는 런타임에 참조 textProgress를 만들지 만 만들 수는 없지만 인터페이스에서도 사용한다는 것입니다. 참조에 액세스 할 때 최소한 널 포인터를 가져 오는 것을 의미하는 객체가 필요하거나 런타임 전에 작성되도록 정적으로 선언해야합니다. –