Question

这是我的适配器类：

 public class CheckboxAdapter extends ArrayAdapter<String> {
        private LayoutInflater mInflater;
        Context context;
        private String[] mStrings;
        private TypedArray mIcons;
        private int mViewResourceId;
        ArrayList<String> selectedStrings = new ArrayList<String>();

        public CheckboxAdapter(Context ctx, int viewResourceId, String[] strings) {
            super(ctx, viewResourceId, strings);

            mInflater = (LayoutInflater) ctx
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            mStrings = strings;

            mViewResourceId = viewResourceId;
        }

        public int getCount() {
            return mStrings.length;
        }

        public String getItem(int position) {
            return mStrings[position];
        }

        public long getItemId(int position) {
            return 0;
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            convertView = mInflater.inflate(mViewResourceId, null);

            final CheckBox tv = (CheckBox) convertView.findViewById(R.id.checkBox1);
            tv.setText(mStrings[position]);
            tv.setOnCheckedChangeListener(new OnCheckedChangeListener() {

                @Override
                public void onCheckedChanged(CompoundButton buttonView,
                        boolean isChecked) {
                    // TODO Auto-generated method stub

                    if (isChecked) {
                        selectedStrings.add(tv.getText().toString());
                        Toast.makeText(buttonView.getContext(),Boolean.toString(selectedStrings.add(tv.getText().toString())), Toast.LENGTH_SHORT).show();
                    } else {
                        selectedStrings.remove(tv.getText().toString());
                    }

                }
            });

            return convertView;
        }

    }

这是我的行为

public class AddTime extends Activity {
    CheckboxAdapter cadpter;

    String daya[] = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thrusday",
            "Friday", "Saturday" };
    ListView list;
    ArrayList<String> selectedStrings = new ArrayList<String>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.addtime);
        list = (ListView) findViewById(R.id.listView1);
        cadpter = new CheckboxAdapter(AddTime.this, R.layout.list_item, daya);
        list.setAdapter(cadpter);

    }

}

我在listview中全天显示我也有显示复选框，每天当我启用复选框时它在吐司中显示为true但我想要我选择日使用复选框我的意思是我希望在textview中全天显示在主要方面，请建议我如何得到它。

Answer 1

如何从android
中的list-view点击按钮获取所有选中的值

在selectedStrings ArrayList中添加所有选中的值。在CheckboxAdapter类中创建一个方法，该方法返回所有选定值的ArrayList。例如：

public ArrayList<String> getAllSelectedValues(){
  return this.selectedStrings;
 }

现在使用cadpter CheckboxAdapter类对象访问Activity中的getAllSelectedValues方法：

ArrayList<String> selectedStrings=cadpter.getAllSelectedValues();

Answer 2

从selectedStrings arrayList获取所有值

for(int i=0;i<=selectedStrings.sizes();i++){
String s =selectedStrings.get(i);
}

Answer 3

取布尔数组

ArrayList<Boolean> selectedStrings = new ArrayList<>();

并在复选框中添加onClickListener

    public View getView(final int position, View convertView, ViewGroup parent) {
           -
           -
            tv.setChecked(false);
            if(selectedStrings.size() <= position){
                selectedStrings.add(position, false);
            }else
                tv.setChecked(selectedStrings.get(position));
            tv.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                boolean state = selectedStrings.get(position);
            selectedStrings.remove(position);
            selectedStrings.add(position, state ? false : true);

                }
            });
}

如何从android中的list-view单击按钮获取所有选中的值

3 个答案: