0
我有一個適配器類的回收站視圖。在單個項目視圖中還有一個複選框。在我的佈局視圖中，它包含上面提到的一個按鈕和回收站視圖。當我檢查視圖中的任何複選框時，該按鈕應該被激活（將顏色更改爲活動狀態）。當視圖按鈕上沒有被選擇時，應該以停用的形式出現。我怎麼可能？任何示例？代碼如下根據Recyclerview複選框中的變化控制按鈕行爲
public class PlatformAdapter extends RecyclerView.Adapter<PlatformAdapter.ViewHolder> {
ArrayList<Batch> batches;
ArrayList<CourseSlug> courses;
boolean isInstituteStudent;
public void setBatches(ArrayList<Batch> batches) {
this.batches = batches;
notifyDataSetChanged();
}
public void setCourses(ArrayList<CourseSlug> courses) {
this.courses = courses;
notifyDataSetChanged();
}
public ArrayList<CourseSlug> getCourses() {
return courses;
}
public ArrayList<Batch> getBatches() {
return batches;
}
public void setInstituteStudent(boolean instituteStudent) {
isInstituteStudent = instituteStudent;
}
public boolean isInstituteStudent() {
return isInstituteStudent;
}
public PlatformAdapter() {
courses = new ArrayList<>();
batches = new ArrayList<>();
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_cell_platform_item, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
if (isInstituteStudent) {
Batch batch = batches.get(position);
holder.enrolment.setText(batch.getName());
holder.selectEnrollment.setChecked(batch.isPreselect());
} else {
final CourseSlug course = courses.get(position);
holder.enrolment.setText(course.getName());
holder.selectEnrollment.setChecked(course.isPreselect());
}
}
@Override
public int getItemCount() {
return isInstituteStudent ? batches.size() : courses.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
TextView enrolment;
CheckBox selectEnrollment;
public ViewHolder(final View itemView) {
super(itemView);
enrolment = (TextView) itemView.findViewById(R.id.tv_entrollment);
selectEnrollment = (CheckBox) itemView.findViewById(R.id.cb_select_entrollment);
selectEnrollment.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
int index = getLayoutPosition();
if(isInstituteStudent) {
Batch batch = batches.get(index);
batch.setPreselect(b);
} else {
CourseSlug course = courses.get(index);
course.setPreselect(b);
}
}
});
}
}
@Override
public long getItemId(int position) {
return super.getItemId(position);
}
}
我Recyclerview和按鈕實現類下面
public class SelectPlatform extends BaseActivity {
PlatformAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_select_platform);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
initializeViews(
findViewById(R.id.ll_content_area),
findViewById(R.id.tv_error),
findViewById(R.id.pb_loading)
);
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.rv_platform);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new PlatformAdapter();
recyclerView.setAdapter(adapter);
private void renderCourses(ArrayList<CourseSlug> courses) {
getSupportActionBar().setTitle("Select Courses");
TextView title = (TextView) findViewById(R.id.tv_select_enrollment);
title.setText("Select your courses");
adapter.setInstituteStudent(false);
adapter.setCourses(courses);
}
private void renderInstitute(Institute institute) {
getSupportActionBar().setTitle("Select Batches");
TextView title = (TextView) findViewById(R.id.tv_select_enrollment);
title.setText("Select your batches at " + institute.getName());
adapter.setInstituteStudent(true);
adapter.setBatches(institute.getBatches());
// Save institute name
SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(this).edit();
editor.putString("institute_name", institute.getName());
editor.commit();
}
public void onButtonClick(View view) {
findViewById(R.id.pb_loading).setVisibility(View.VISIBLE);
findViewById(R.id.tv_error).setVisibility(View.GONE);
findViewById(R.id.ll_content_area).setVisibility(View.GONE);
if(adapter.isInstituteStudent()) {
ArrayList<Batch> batches = adapter.getBatches();
ArrayList<Integer> batchIds = new ArrayList<>();
for(Batch batch: batches) {
if(batch.isPreselect())
batchIds.add(batch.getId());
}
GeneralApiService.addBatches(this, batchIds);
} else {
ArrayList<CourseSlug> courses = adapter.getCourses();
ArrayList<String> courseSlgus = new ArrayList<>();
for(CourseSlug course: courses) {
if(course.isPreselect())
courseSlgus.add(course.getSlug());
}
GeneralApiService.addCourses(this, courseSlgus);
}
new SavePlatformNamesTask().execute();
}