【发布时间】：2020-05-21 15:16:21
【问题描述】：
我正在开发一个 android 应用程序，在该应用程序中我实现了一个 Recyclerview，每个子项中分组的视图很少。（请查看此处链接的图像）， RecyclerviewItems。单击最右上角的“更多选项”图标时，它将使“操作”布局可见，而该布局是不可见的。 ActionItemsVisibleWhenMoreOptionsIsClicked。我想知道的是，当用户在该布局之外触摸/单击时，如何使“操作”布局再次不可见。它可能是点击 Recyclerview 中的其他项目，也可能是点击 Recyclerview 之外的项目。
以下是我的子架构布局 xml。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/pure_white"
android:orientation="vertical">
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:id="@+id/task_detail_layout"
android:layout_width="match_parent"
android:layout_height="70dp"
android:orientation="horizontal"
android:weightSum="5">
<View
android:id="@+id/priority_view"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.15"
android:background="@color/high" />
<TextView
android:id="@+id/task_description"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="4.35"
android:background="@color/pure_white"
android:hint="@string/task_description_dummy"
android:padding="10dp"
android:layout_gravity="center"
android:textSize="16sp" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center_vertical|end"
android:paddingStart="20dp">
<LinearLayout
android:id="@+id/actions"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="@color/pure_white"
android:orientation="horizontal"
android:paddingStart="20dp"
android:visibility="gone">
<ImageView
android:id="@+id/done_task"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:background="?android:attr/selectableItemBackgroundBorderless"
android:src="@drawable/ic_done_task" />
<ImageView
android:id="@+id/edit_task"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:layout_marginStart="8dp"
android:background="?android:attr/selectableItemBackgroundBorderless"
android:src="@drawable/ic_edit_task" />
<ImageView
android:id="@+id/delete_task"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:layout_marginStart="8dp"
android:background="?android:attr/selectableItemBackgroundBorderless"
android:src="@drawable/ic_delete_task" />
<ImageView
android:id="@+id/empty_view"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:layout_marginStart="8dp"/>
</LinearLayout>
</LinearLayout>
<ImageView
android:id="@+id/more_options"
android:layout_width="30dp"
android:layout_height="match_parent"
android:layout_gravity="center_vertical|end"
android:backgroundTint="@color/pure_white"
android:background="?android:attr/selectableItemBackground"
android:src="@drawable/ic_more_options" />
</FrameLayout>
<View
android:id="@+id/horizontal_line"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/light_gray" />
</LinearLayout>
下面是我的适配器
public class TaskAdapter extends RecyclerView.Adapter<TaskAdapter.MyViewHolder> {
private List<Task> tasks;
private Context context;
static class MyViewHolder extends RecyclerView.ViewHolder {
LinearLayout taskDetailLayout;
View priorityView;
TextView taskDescriptionView;
ImageView moreOptions;
LinearLayout actions;
ImageView markTaskCompleted;
ImageView editTask;
ImageView deleteTask;
MyViewHolder(View view) {
super(view);
taskDetailLayout = view.findViewById(R.id.task_detail_layout);
priorityView = view.findViewById(R.id.priority_view);
taskDescriptionView = view.findViewById(R.id.task_description);
moreOptions = view.findViewById(R.id.more_options);
actions = view.findViewById(R.id.actions);
markTaskCompleted = view.findViewById(R.id.done_task);
editTask = view.findViewById(R.id.edit_task);
deleteTask = view.findViewById(R.id.delete_task);
}
}
public TaskAdapter(List<Task> items, Context context) {
this.tasks = items;
this.context = context;
setHasStableIds(true);
}
public void refreshTaskList(List<Task> tasks) {
this.tasks = tasks;
notifyDataSetChanged();
}
@NonNull
@Override
public TaskAdapter.MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.task_schema, parent, false);
return new TaskAdapter.MyViewHolder(itemView);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getItemViewType(int position) {
return position;
}
@Override
public void onBindViewHolder(@NonNull MyViewHolder holder, final int position) {
Task currentTask = tasks.get(position);
if (null != currentTask) {
String taskDescription = currentTask.getDescription();
String priority = currentTask.getPriority();
boolean isTaskCompleted = currentTask.isTaskCompleted();
int priorityColor = PRIORITY_LOW.equalsIgnoreCase(priority) ? context.getResources().getColor(R.color.low) :
(PRIORITY_MEDIUM.equalsIgnoreCase(priority) ? context.getResources().getColor(R.color.medium) :
context.getResources().getColor(R.color.high));
holder.taskDescriptionView.setText(taskDescription);
holder.priorityView.setBackgroundColor(priorityColor);
// When user clicks 'More Options' icon show the action icons
holder.moreOptions.setOnClickListener(v -> {
holder.actions.setVisibility(View.VISIBLE);
holder.taskDetailLayout.setAlpha(0.7F);
holder.taskDescriptionView.setAlpha(0.7F);
holder.taskDetailLayout.setBackgroundColor(context.getResources().getColor(R.color.dim_description_color));
holder.taskDescriptionView.setBackgroundColor(context.getResources().getColor(R.color.dim_description_color));
Animation animation = AnimationUtils.loadAnimation(context, R.anim.right_to_left_anim);
holder.actions.startAnimation(animation);
});
// Mark Task related logic
// If task is already completed, show done_mark icon and hide edit icon
if (isTaskCompleted) {
holder.markTaskCompleted.setOnClickListener(null);
holder.markTaskCompleted.setImageDrawable(context.getResources().getDrawable(R.drawable.ic_done_mark));
holder.editTask.setVisibility(View.GONE);
} else {
// When user clicks 'Mark Done' icon show the popup
holder.markTaskCompleted.setOnClickListener(v -> {
new AlertDialog.Builder(context)
.setTitle("Mark Completed")
.setMessage("Nice, Have you completed the task?")
.setNegativeButton("No", null)
.setPositiveButton("Yes", (arg0, arg1) -> {
TaskHelper.markTaskCompleted(context, currentTask.getId());
holder.markTaskCompleted.setOnClickListener(null);
holder.markTaskCompleted.setImageDrawable(context.getResources().getDrawable(R.drawable.ic_done_mark));
holder.editTask.setVisibility(View.GONE);
}).create().show();
;
});
}
// Delete task related logic
// When user clicks 'Delete task' icon
holder.deleteTask.setOnClickListener(v -> {
new AlertDialog.Builder(context)
.setTitle("Delete task")
.setMessage("Are you sure want to delete the task?")
.setNegativeButton("No", null)
.setPositiveButton("Yes", (arg0, arg1) -> {
new HomeScreenActivity().deleteTask(context, currentTask.getId());
holder.actions.setVisibility(View.VISIBLE);
}).create().show();
});
// Edit task related logic
holder.editTask.setOnClickListener(v -> {
Intent editIntent = new Intent(context, AddNewTaskActivity.class);
editIntent.putExtra(TASK_ID, currentTask.getId());
context.startActivity(editIntent);
});
}
}
@Override
public int getItemCount() {
return tasks.size();
}
}
我需要可以在适配器或活动中实现的逻辑/功能。
【问题讨论】：
-
Hey Agniraj，请注意别人的时间：不要让别人写代码。如果回答的人给了你一个有效的关于如何解决问题的高级描述，那是一个可以接受的答案。如果他们还想提供代码示例，那真的取决于他们。无论如何，极不可能有人可以为您提供无需任何更改即可为您工作的可复制粘贴代码。
-
是的..对@rock3r。我不需要复制粘贴代码。我只是想知道我们如何实现它。因为我尝试了几乎所有可能的方法，但对我来说没有任何效果。感谢您的补充。
标签： android android-layout android-recyclerview onclicklistener