Android中怎么实现可复用的选择页面，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
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窗口代码
/** * 根据上一个页面传过来的isMultipleEnable判断是否可以多选 *
单选页面选中一个条目直接结束并回传 *
多选页面选中之后需要提交 *
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 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 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 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 mList; private LayoutInflater mInflater; public UserSelectAdapter(List 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; }}
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