Android实现可复用的选择页面

本文实例为大家分享了Android实现可复用的选择页面的具体代码，供大家参考，具体内容如下

窗口代码

/**
* 根据上一个页面传过来的isMultipleEnable判断是否可以多选
* 1.单选页面选中一个条目直接结束并回传
* 2.多选页面选中之后需要提交
* 3.提交数据之后需要刷新列表
*/
public class UserSelectActivity extends AppCompatActivity implements View.OnClickListener {

private static final String TAG = "UserSelectActivity";

@BindView(R.id.tv_title_middle)
 TextView title;
 @BindView(R.id.title_left)
 ImageView back;
 @BindView(R.id.normal_user_listview)
 ListView mListView;
 @BindView(R.id.edit_tv)
 TextView edit;
 @BindView(R.id.filter_tv)
 TextView filter;

private Context mContext;
 private boolean isMultipleEnable;
 private UserSelectAdapter mAdapter;
 private List<ClsNormalUser> mClsNormalUserList;

@Override
 protected void onCreate(@Nullable Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_normal_user_list);
   //初始化ButterKnife
   ButterKnife.bind(this);

initView();
   initData();
   initListener();
 }

private void initData() {
   mContext = this;

//通过源页面传过来的值来生成对应的视图，默认是单选
   isMultipleEnable = getIntent().getBooleanExtra("isMultipleEnable", false);

//初始化数据源
   mClsNormalUserList = new ArrayList<>();
   mAdapter = new UserSelectAdapter(mClsNormalUserList, mContext);
   mListView.setAdapter(mAdapter);

getOfflineData(20);

//多选页面要显示提交按钮和checkbox
   if (isMultipleEnable) {
     edit.setCompoundDrawablesWithIntrinsicBounds(R.drawable.ic_send_black_24dp, 0, 0, 0);
     edit.setVisibility(View.VISIBLE);

for (ClsNormalUser user : mClsNormalUserList) {
       user.setIsCheckBoxVisible(true);
     }
   }
 }

//生成模拟数据
 private void getOfflineData(int num) {
   List<ClsNormalUser> clsNormalUserList = new ArrayList<>();
   for (int i = 0; i < num; i++) {
     ClsNormalUser clsNormalUser = new ClsNormalUser();
     clsNormalUser.setUserID("userID " + i);
     clsNormalUser.setWorkNumber("workNumber " + i);
     clsNormalUser.setUserType("userType " + i);
     clsNormalUser.setOrgName("orgName " + i);
     clsNormalUser.setCName("cName " + i);
     clsNormalUser.setSysUserName("sysUserName " + i);
     clsNormalUser.setOrgID("orgID " + i);
     clsNormalUser.setWorkPos("workPos " + i);
     clsNormalUserList.add(clsNormalUser);
   }
   //数据填充后要同时适配器刷新视图
   mClsNormalUserList.addAll(clsNormalUserList);
   mAdapter.notifyDataSetChanged();
 }

private void initView() {
   title.setText("选择用户");
 }

private void initListener() {
   edit.setOnClickListener(this);

mListView.setOnItemClickListener((parent, view, position, id) -> {
     ClsNormalUser clsNormalUser = mClsNormalUserList.get(position);
     if (isMultipleEnable) {
       //多选状态下点击选中当前条目
       if (clsNormalUser.getIsCheckBoxVisible()) {
         clsNormalUser.setIsChecked(!clsNormalUser.getIsChecked());
         mAdapter.notifyDataSetChanged();
       }
     } else {
       //单选状态下点击结束当前页并回传值
       Intent intent = new Intent();
       //实体类要实现序列化接口Parcelable
       intent.putExtra("user", clsNormalUser);
       setResult(RESULT_OK, intent);
       finish();
     }
   });
 }

@Override
 public void onClick(View v) {

//点击提交按钮将选中的值回传并结束当前页
   if (v.getId() == R.id.edit_tv) {
     ArrayList<ClsNormalUser> normalUserList = new ArrayList<>();
     for (ClsNormalUser normalUser : mClsNormalUserList) {
       if (normalUser.getIsChecked()) {
         normalUserList.add(normalUser);
       }
     }
     Intent intent = new Intent();
     //实体类要实现序列化接口Parcelable
     intent.putParcelableArrayListExtra("users", normalUserList);
     setResult(RESULT_OK, intent);
     finish();
   }
 }
}

适配器代码

public class UserSelectAdapter extends BaseAdapter {

private List<ClsNormalUser> mList;
 private LayoutInflater mInflater;

public UserSelectAdapter(List<ClsNormalUser> list, Context mContext) {
   mList = list;
   mInflater = LayoutInflater.from(mContext);
 }

@Override
 public int getCount() {
   return mList.size();
 }

@Override
 public ClsNormalUser getItem(int position) {
   return mList.get(position);
 }

@Override
 public long getItemId(int position) {
   return position;
 }

@Override
 public View getView(final int position, View convertView, ViewGroup root) {
   ItemHolder holder;
   ClsNormalUser clsNormalUser = mList.get(position);

if (convertView == null) {
     convertView = mInflater.inflate(R.layout.item_alluser_sys, null);
     holder = new ItemHolder();
     holder.id = convertView.findViewById(R.id.user_id);
     holder.name = convertView.findViewById(R.id.user_name);
     holder.org = convertView.findViewById(R.id.user_org);

holder.checkBox = convertView.findViewById(R.id.user_checkbox);
     convertView.setTag(holder);
   } else {
     holder = (ItemHolder) convertView.getTag();
   }

holder.id.setText(clsNormalUser.getUserID());
   holder.name.setText(clsNormalUser.getCName());
   holder.org.setText(clsNormalUser.getOrgName());

//是否显示checkbox
   if (clsNormalUser.getIsCheckBoxVisible()) {
     holder.checkBox.setVisibility(View.VISIBLE);
   } else {
     holder.checkBox.setVisibility(View.GONE);
   }

//条目是否选中
   if (clsNormalUser.getIsChecked()) {
     holder.checkBox.setImageResource(R.drawable.ic_check_box_black_24dp);
   } else {
     holder.checkBox.setImageResource(R.drawable.ic_check_box_outline_blank_black_24dp);
   }

return convertView;
 }

class ItemHolder {
   TextView id;
   TextView name;
   TextView org;
   ImageView checkBox;
 }
}

效果如图

来源：https://blog.csdn.net/csdncaoguo940713/article/details/90241307