android - 在android中寻找一个选项微调器/选项轮，如控件

Question

寻找一个控件，允许一次为 android 选择一个文本值，每侧有 2 个箭头。不确定控件的名称，但这是一个示例图像：

Answer 1

如果是约会，我可能会建议你使用看起来像这样的 DatePicker 。否则，如果是时间，那么您可能想要这样的东西。

但是，如果您正在寻找类似 NumberPicker 的东西，它似乎只有 API 11 及更高版本可用。因此，如果您愿意，您可能需要自定义您自己的。

Answer 2

嘿，我想看看这个滚轮控件。第三方创建的自定义控件。他还在他的博客中提供了其他详细信息..您可以根据需要对其进行修改..

Answer 3

创建了我自己的，这对我很有用。厨房控制帮助很大。随意指出任何问题。

import android.content.Context;
import android.graphics.Color;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.*;
import nz.co.nuffie.android.crichq.R;

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

public class ScrollWheelControl extends LinearLayout{
    private final ArrayList<String> textList = new ArrayList<String>();
    private ArrayAdapter optionAdapter = null;
    private AdapterView.OnItemSelectedListener itemSelectedListener = null;

    public ScrollWheelControl(Context context){
        super(context);
    }

    public ScrollWheelControl(Context context, AttributeSet attrs){
        super(context, attrs);
        initView(context);
    }

    public ScrollWheelControl(Context context, AttributeSet attrs, int defStyle){
        super(context, attrs, defStyle);
        initView(context);
    }

    public void initView(Context context) {
        View.inflate(context, R.layout.scroll_wheel_control, this);

        optionAdapter = new ArrayAdapter<String>(context, android.R.layout.simple_gallery_item, textList )
        {
            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                View v = super.getView(position,convertView,parent);
                if(v instanceof TextView){//Just in case.
                    TextView txt = (TextView)v;
                    Gallery.LayoutParams glp = new Gallery.LayoutParams(Gallery.LayoutParams.FILL_PARENT, Gallery.LayoutParams.FILL_PARENT);
                    txt.setGravity(Gravity.CENTER);
                    txt.setLayoutParams(glp);
                }
                return v;
            }
        };


        optionAdapter.notifyDataSetChanged();

        final Gallery g = (Gallery) findViewById(R.id.gOptionSelect);
        g.setAdapter(optionAdapter);

        final Button btnLeft = (Button) findViewById(R.id.btnLeft);
        final Button btnRight = (Button) findViewById(R.id.btnRight);
        g.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> list, View view, int position, long id) {
                if(position >= textList.size()-1){
                    btnRight.setTextColor(Color.GRAY);
                }else
                    btnRight.setTextColor(Color.WHITE);

                if(position == 0){
                    btnLeft.setTextColor(Color.GRAY);
                }else
                    btnLeft.setTextColor(Color.WHITE);

                if(itemSelectedListener != null){
                    itemSelectedListener.onItemSelected(list,view,position,id);
                }
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
            }
        });
        btnLeft.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View view){
                g.onFling(null, null, 2000, 0);
            }
        });
        btnRight.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View view){
                g.onFling(null, null, -2000, 0);
            }
        });
    }

    public void setOnItemListener(AdapterView.OnItemSelectedListener setItemSelectedListener){
        itemSelectedListener = setItemSelectedListener;
    }

    public void addTextItems(List<String> list){
        textList.addAll(list);
        if(optionAdapter != null){
            optionAdapter.notifyDataSetChanged();
        }
    }
}

XML 代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:padding="5dp">

    <Button
        android:id="@+id/btnLeft"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="\u003C"
        android:background="@android:color/transparent"
        android:textColor="@android:color/white"
        android:shadowColor="@android:color/black"
        android:shadowDx="1"
        android:shadowDy="1"
        android:shadowRadius="2"
        android:textStyle="bold"
        android:minWidth="15dp"
            />

    <Gallery
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp"
        android:id="@+id/gOptionSelect"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center_vertical"
        android:spacing="0dp">
    </Gallery>

    <Button
        android:id="@+id/btnRight"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@android:color/transparent"
        android:text="\u003E" 
        android:textColor="@android:color/white"
        android:shadowColor="@android:color/black"
        android:shadowDx="1"
        android:shadowDy="1"
        android:shadowRadius="2"
        android:textStyle="bold"
        android:minWidth="15dp"
            />

</LinearLayout>