android - Android 中带有自定义微调器的复选框和 TextView

Question

我在微调框中有 7 个项目。我创建了带有 TextView 和复选框的微调框。我想做以下逻辑。

你能给我一些建议吗:

private static final String[] select_qualification = {
        "Select Qualification", "10th / Below", "12th", "Diploma", "UG",
        "PG", "Phd" };

如果我选中 UG 复选框，它会自动选中 10th/Below、12th、Diploma 复选框并禁用PG 和 phd 复选框的选中状态。

如果选中任何复选框意味着上一个项目复选框自动需要选中状态，下一个项目复选框自动需要取消选中状态。

现在这是我的适配器文件:

public class CustomAdapter extends ArrayAdapter<String> {

    public CustomAdapter(Context context, int resourceId, String[] objects) {
        super(context, resourceId, objects);
        // TODO Auto-generated constructor stub
    }

    @Override
    public View getDropDownView(int position, View convertView,
            ViewGroup parent) {
        return getCustomView(position, convertView, parent);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        return getCustomView(position, convertView, parent);
    }

    public View getCustomView(int position, View convertView,
            ViewGroup parent) {

        LayoutInflater inflater = getLayoutInflater();

        View row = inflater.inflate(R.layout.spinner_item, parent, false);
        final TextView label = (TextView) row
                .findViewById(R.id.spinneritemqualification);
        label.setText(select_qualification[position]);

        final CheckBox checkboxButton = (CheckBox) row
                .findViewById(R.id.checkboxquali);
        if ((position == 0)) {

            checkboxButton.setVisibility(View.INVISIBLE);
        }
        checkboxButton.setOnCheckedChangeListener(new OnCheckedChangeListener() {

             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                 // TODO Auto-generated method stub
                 System.out.println("Position "+ isChecked);
                // Integer pos = (Integer) buttonView.getTag(); 
                 int getPosition = (Integer) buttonView.getTag();  
                 Toast.makeText(getApplicationContext(),
                        "CLICKED:" + getPosition, Toast.LENGTH_LONG)
                        .show();

                 if (isChecked) {
                     checkboxButton.setChecked(true);
                 }
                 else {
                     checkboxButton.setChecked(false);
                 }
             }
         });

Answer 1

我已经尝试实现你想要的。这是它的演示。

您可以根据需要进行修改。

自定义适配器:

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;


public class MyAdapter extends ArrayAdapter<StateVO> {
    private Context mContext;
    private ArrayList<StateVO> listState;
    private MyAdapter myAdapter;
    private boolean isFromView = false;

    public MyAdapter(Context context, int resource, List<StateVO> objects) {
        super(context, resource, objects);
        this.mContext = context;
        this.listState = (ArrayList<StateVO>) objects;
        this.myAdapter = this;
    }

    @Override
    public View getDropDownView(int position, View convertView,
                                ViewGroup parent) {
        return getCustomView(position, convertView, parent);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        return getCustomView(position, convertView, parent);
    }

    public View getCustomView(final int position, View convertView,
                              ViewGroup parent) {

        final ViewHolder holder;
        if (convertView == null) {
            LayoutInflater layoutInflator = LayoutInflater.from(mContext);
            convertView = layoutInflator.inflate(R.layout.spinner_item, null);
            holder = new ViewHolder();
            holder.mTextView = (TextView) convertView
                    .findViewById(R.id.text);
            holder.mCheckBox = (CheckBox) convertView
                    .findViewById(R.id.checkbox);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        holder.mTextView.setText(listState.get(position).getTitle());

        // To check weather checked event fire from getview() or user input
        isFromView = true;
        holder.mCheckBox.setChecked(listState.get(position).isSelected());
        isFromView = false;

        if ((position == 0)) {
            holder.mCheckBox.setVisibility(View.INVISIBLE);
        } else {
            holder.mCheckBox.setVisibility(View.VISIBLE);
        }
        holder.mCheckBox.setTag(position);
        holder.mCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                int getPosition = (Integer) buttonView.getTag();

                if (!isFromView) {
                    Log.e("isFromView", !isFromView + "");
                    if (getPosition == 4) { // cam make a rule according to it for any position
                        if (!listState.get(4).isSelected()) {
                            if (isChecked) {
                                for (int i = 0; i < listState.size(); i++) {
                                    if (i < 4) {
                                        listState.get(i).setSelected(true);
                                    } else if (i == 4) {
                                        listState.get(i).setSelected(true);
                                    } else {
                                        listState.get(i).setSelected(false);
                                    }
                                }
                            }
                        } else {
                            if (!isChecked) {
                                for (int i = 0; i < listState.size(); i++) {
                                    if (i < 4) {
                                        listState.get(i).setSelected(false);
                                    } else if (i == 4) {
                                        listState.get(i).setSelected(false);
                                    }
                                }
                            }
                        }
                        myAdapter.notifyDataSetChanged();
                    }
                }
            }
        });
        return convertView;
    }

    private class ViewHolder {
        private TextView mTextView;
        private CheckBox mCheckBox;
    }
}

处理复选框状态的基本 VO:

public class StateVO {
    private String title;
    private boolean selected;

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public boolean isSelected() {
        return selected;
    }

    public void setSelected(boolean selected) {
        this.selected = selected;
    }
}

微调项布局:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <TextView
        android:id="@+id/text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:text="text"
        android:textAlignment="gravity" />

    <CheckBox
        android:id="@+id/checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true" />
</RelativeLayout>

Activity 中的微调器:

 <Spinner
        android:id="@+id/spinner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp" />

在微调器中设置数据的方法:

private void setSpinnerData() {
        final String[] select_qualification = {
                "Select Qualification", "10th / Below", "12th", "Diploma", "UG",
                "PG", "Phd"};
        Spinner spinner = (Spinner) findViewById(R.id.spinner);

        ArrayList<StateVO> listVOs = new ArrayList<>();

        for (int i = 0; i < select_qualification.length; i++) {
            StateVO stateVO = new StateVO();
            stateVO.setTitle(select_qualification[i]);
            stateVO.setSelected(false);
            listVOs.add(stateVO);
        }
        MyAdapter myAdapter = new MyAdapter(MainActivity.this, 0,
                listVOs);
        spinner.setAdapter(myAdapter);
    }

享受编码吧!