[英]Images are not displayed while loading html file in android web view
[英]Images are not displayed in android list view
我正在制作一個待辦事項應用程序,當一個項目被標記為已完成時,應該在列表項目的前面顯示一個圖像。 但是即使數據庫中的項目狀態更改為已完成,圖像在列表視圖中也不可見。
這是我的適配器類。
公共類 ToDoAdapter 擴展 ArrayAdapter {
private Context context;
private int resource;
List<ToDoModel> todos;
public ToDoAdapter(@NonNull Context context, int resource, @NonNull List<ToDoModel> objects) {
super(context, resource, objects);
this.context = context;
this.resource = resource;
this.todos = objects;
}
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
//Inflate card view
LayoutInflater inflater = LayoutInflater.from(context);
View row = inflater.inflate(resource, parent, false);
TextView title = row.findViewById(R.id.title);
TextView description = row.findViewById(R.id.txtDescription);
ImageView img = (ImageView)row.findViewById(R.id.img_done);
img.setVisibility(View.VISIBLE);
//Set data in card view
ToDoModel todo = todos.get(position);
title.setText(todo.getTitle());
description.setText(todo.getDescription());
//Show done image
if(todo.getFinished() > 0){
img.setVisibility(View.VISIBLE);
}
return row;
}
}
這是主活動。
公共類 MainActivity 擴展 AppCompatActivity {
private ListView todoList;
private TextView countTxt;
private Button addTodo;
private List<ToDoModel> toDos;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
todoList = (ListView)findViewById(R.id.listViewToDo);
countTxt = (TextView)findViewById(R.id.txtCount);
addTodo = (Button)findViewById(R.id.btnAdd);
toDos = new ArrayList<>();
addTodo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Go to next activity
startActivity(new Intent(getApplicationContext(), AddToDO.class));
}
});
}
@Override
protected void onResume() {
super.onResume();
DBHandler dbh = new DBHandler(getApplicationContext());
//Set count
int count = dbh.getCountTODO();
countTxt.setText("You have " + count + " TODOs");
//Save list
toDos = dbh.getAllToDos();
//Set adapter to list
ToDoAdapter toDoAdapter = new ToDoAdapter(getApplicationContext(), R.layout.todo_cardview, toDos);
todoList.setAdapter(toDoAdapter);
//Add click listener to list element
todoList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Get clicked item
ToDoModel todo = toDos.get(position);
//Dialog box
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle(todo.getTitle());
builder.setMessage(todo.getDescription());
//Buttons
builder.setNegativeButton("Delete", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dbh.deleteItem(todo.getId());
Toast.makeText(getApplicationContext(), "ToDo Deleted", Toast.LENGTH_SHORT).show();
startActivity(new Intent(getApplicationContext(), MainActivity.class));
}
});
builder.setPositiveButton("Finished", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
long time = System.currentTimeMillis();
//Update status
dbh.updateFinished(todo.getId(), time);
startActivity(new Intent(getApplicationContext(), MainActivity.class));
}
});
builder.setNeutralButton("Edit", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(MainActivity.this, AddToDO.class);
intent.putExtra("id", todo.getId());
intent.putExtra("title", todo.getTitle());
intent.putExtra("description", todo.getDescription());
intent.putExtra("finished", todo.getFinished());
startActivity(intent);
}
});
builder.show();
}
});
}
}
使用 Glide 或 Picasso Library 以任何其他形狀顯示圖像。
滑翔示例:
Glide.with(mContext).load(responseList.getLogoUrl()).apply(RequestOptions.circleCropTransform()).into(holder.imageName);
畢加索示例:
Picasso.get().load(clsobjname.getLogoUrl()) .into(viewHolder.imagename);
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