我使用这个liabray进行滑动手势。 https://github.com/nikhilpanju/RecyclerViewEnhanced。 在MainAdapter.java类中，recyclerView包含List但我想将其替换为List＆gt;类型。当我这样做时，会出现很多错误。请指导我如何做到这一点或建议我做任何教程。
MainAdapter.java
public class MainAdapter extends RecyclerView.Adapter<MainAdapter.MainViewHolder> {
LayoutInflater inflater;
List<RowModel> modelList;
public MainAdapter(Context context, List<RowModel> list) {
inflater = LayoutInflater.from(context);
modelList = new ArrayList<>(list);
}
@Override
public MainViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.recycler_row, parent, false);
return new MainViewHolder(view);
}
@Override
public void onBindViewHolder(MainViewHolder holder, int position) {
holder.bindData(modelList.get(position));
}
@Override
public int getItemCount() {
return modelList.size();
}
class MainViewHolder extends RecyclerView.ViewHolder {
TextView mainText, subText;
public MainViewHolder(View itemView) {
super(itemView);
mainText = (TextView) itemView.findViewById(R.id.mainText);
subText = (TextView) itemView.findViewById(R.id.subText);
}
public void bindData(RowModel rowModel) {
mainText.setText(rowModel.getMainText());
subText.setText(rowModel.getSubText());
}
}
}
的活动：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_admin_panel);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
unclickableRows = new ArrayList<>();
unswipeableRows = new ArrayList<>();
dialogItems = new String[25];
for (int i = 0; i < 25; i++) {
dialogItems[i] = String.valueOf(i + 1);
}
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
mAdapter = new MainAdapter(this, getData());
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
onTouchListener = new RecyclerTouchListener(this, mRecyclerView);
onTouchListener
.setIndependentViews(R.id.rowButton)
.setViewsToFade(R.id.rowButton)
.setClickable(new RecyclerTouchListener.OnRowClickListener() {
@Override
public void onRowClicked(int position) {
util.shortToast(getApplicationContext(), "Row " + (position + 1) + " clicked!");
}
@Override
public void onIndependentViewClicked(int independentViewID, int position) {
util.shortToast(getApplicationContext(), "Button in row " + (position + 1) + " clicked!");
}
})
.setSwipeOptionViews(R.id.add, R.id.edit, R.id.change)
.setSwipeable(R.id.rowFG, R.id.rowBG, new RecyclerTouchListener.OnSwipeOptionsClickListener() {
@Override
public void onSwipeOptionClicked(int viewID, int position) {
String message = "";
if (viewID == R.id.add) {
message += "Add";
} else if (viewID == R.id.edit) {
message += "Edit";
} else if (viewID == R.id.change) {
message += "Change";
}
message += " clicked for row " + (position + 1);
util.shortToast(getApplicationContext(), message);
}
});
mRecyclerView.addOnItemTouchListener(onTouchListener);
// Detect touched area
detector = new Swipe(this,this);
db = new DB(getApplicationContext());
Bundle bundle = getIntent().getExtras();
if(bundle != null) {
String id = bundle.getString("id");
Toast.makeText(this, "Welcome " + db.getUsernameById(id), Toast.LENGTH_LONG).show();
}
//get references of layout
// adapter = new AdapterUsers(this, R.layout.textview_users, arrayList);
// listView = (ListView) findViewById(R.id.users);
// listView.setAdapter(adapter);
//
// showAllUsers();
}
public void showAllUsers() {
try {
Cursor cursor = db.selectAllUsers();
cursor.moveToFirst();
adapter.clear();
if (cursor.getCount() == 0) {
Toast.makeText(this, "Empty user list", Toast.LENGTH_SHORT).show();
} else {
for (int i = 0; i < cursor.getCount(); i++) {
HashMap<String, Object> hm = new HashMap<String, Object>();
hm.put(ID, cursor.getString(cursor.getColumnIndex(db.ID_USER)));
hm.put(USERNAME, cursor.getString(cursor.getColumnIndex(db.NAME_USER)));
arrayList.add(hm);
cursor.moveToNext();
}
}
} catch (Exception e) {
Log.d("Show users", " failed due to " + e.getMessage());
}
}
// Swipe interface
@Override
public void onSwipe(int direction) {
String str = "";
switch (direction) {
case Swipe.SWIPE_RIGHT :
listView.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
//deleteUser(id);
Toast.makeText(AdminPanel.this, "user deleted", Toast.LENGTH_LONG).show();
}
});
str = "Swipe Right";
break;
case Swipe.SWIPE_LEFT : str = "Swipe Left";
break;
case Swipe.SWIPE_DOWN : str = "Swipe Down";
break;
case Swipe.SWIPE_UP : str = "Swipe Up";
break;
}
Toast.makeText(this, str, Toast.LENGTH_SHORT).show();
}
@Override
public void onDoubleTap() {
Toast.makeText(this, "Double Tap", Toast.LENGTH_SHORT).show();
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
if (touchListener != null) touchListener.getTouchCoordinates(ev);
return super.dispatchTouchEvent(ev);
}
@Override
public void setOnActivityTouchListener(OnActivityTouchListener listener) {
this.touchListener = listener;
}
private List<RowModel> getData() {
List<RowModel> list = new ArrayList<>(25);
for (int i = 0; i < 25; i++) {
list.add(new RowModel("Row " + (i + 1), "Some Text... "));
}
return list;
}
}
答案 0 :(得分：1)
你可以改变你的getData（）方法并让它返回HashMap。
private HashMap <String,String> getData() {
HashMap <String,String> list = new HashMap <String,String>();
for (int i = 0; i < 25; i++) {
list.put(i,"Text");
}
return list;
}
现在在您的适配器中，您可以像...一样处理它。
public class MainAdapter extends RecyclerView.Adapter<MainAdapter.MainViewHolder> {
LayoutInflater inflater;
<HashMap<String,String> modelList;
public MainAdapter(Context context, <HashMap<String,String> modelList) {
this.inflater = LayoutInflater.from(context);
this.modelList = modelList;
}
@Override
public MainViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.recycler_row, parent, false);
return new MainViewHolder(view);
}
@Override
public void onBindViewHolder(MainViewHolder holder, int position) {
//holder.bindData();
holder.mainText.setText(modelList.get(position)); // value for the given key
}
@Override
public int getItemCount() {
return modelList.size();
}
class MainViewHolder extends RecyclerView.ViewHolder {
TextView mainText, subText;
public MainViewHolder(View itemView) {
super(itemView);
mainText = (TextView) itemView.findViewById(R.id.mainText);
subText = (TextView) itemView.findViewById(R.id.subText);
}
}
}