自定义LinearLayout实现加减以及长按持续增加和减少

public class UpDownChooseView extends LinearLayout implements View.OnClickListener{
    private Context context;
    private FrameLayout zhi_yin_decrease,zhi_yin_add;
    private EditText txt_show;
    private int defaultValue=1;
    private int defaultMaxValue=100;
    private int defaultMinValue=0;
    private int defaultStep=1;
    private OnUpDownSelectListener onUpDownSelectListener;
    public static final int TYPE_UP = 1;
    public static final int TYPE_DOWN = 2;
    public static final int TYPE_TEXT_CHANGE = 3;
    private Handler handler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            if (msg.what==TYPE_UP){
                if (defaultValue+defaultStep<=defaultMaxValue){
                    defaultValue=defaultValue+defaultStep;
                    txt_show.setText(defaultValue+(isPercent?"%":""));
                    if (onUpDownSelectListener!=null){
                        onUpDownSelectListener.onUpDown(defaultValue);
                    }
                    handler.sendEmptyMessageDelayed(TYPE_UP,80);
                }
            }else if (msg.what==TYPE_DOWN){
                if (defaultValue-defaultStep>=defaultMinValue){
                    defaultValue=defaultValue-defaultStep;
                    if (onUpDownSelectListener!=null){
                        onUpDownSelectListener.onUpDown(defaultValue);
                    }
                    if (defaultValue>0){
                        txt_show.setText(defaultValue+(isPercent?"%":""));
                    }else {
                        txt_show.setText("不设置");
                    }
                    handler.sendEmptyMessageDelayed(TYPE_DOWN,80);
                }
            }
        }
    };
    public void setOnUpDownSelectListener(OnUpDownSelectListener onUpDownSelectListener) {
        this.onUpDownSelectListener = onUpDownSelectListener;
    }

    private boolean isPercent=false,textEnable = false;



    public UpDownChooseView(Context context) {
        super(context);
        this.context=context;
        initView();
    }



    public UpDownChooseView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        this.context=context;
        initView();

    }
    private void initView() {
        View contentView= LayoutInflater.from(context).inflate(R.layout.item_updown_choose,null,false);
        zhi_yin_decrease=contentView.findViewById(R.id.zhi_yin_decrease);
        zhi_yin_add=contentView.findViewById(R.id.zhi_yin_add);
        txt_show=contentView.findViewById(R.id.txt_show);
        zhi_yin_decrease.setOnClickListener(this);
        zhi_yin_add.setOnClickListener(this);
        zhi_yin_decrease.setOnLongClickListener(new OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                handler.sendEmptyMessage(TYPE_DOWN);
                return true;
            }
        });
        zhi_yin_decrease.setOnTouchListener(new OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction()==MotionEvent.ACTION_UP){
                    handler.removeMessages(TYPE_DOWN);
                }
                return false;
            }
        });
        zhi_yin_add.setOnLongClickListener(new OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                handler.sendEmptyMessage(TYPE_UP);
                return true;
            }
        });
        zhi_yin_add.setOnTouchListener(new OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction()==MotionEvent.ACTION_UP){
                    handler.removeMessages(TYPE_UP);
                }
                return false;
            }
        });
        addView(contentView);
    }

    @Override
    public void onClick(View v) {
        if (v==zhi_yin_decrease){
            if (defaultValue-defaultStep>=defaultMinValue){
                setDefaultText(defaultValue-defaultStep,isPercent);

            }
        }else if (v==zhi_yin_add){
            if (defaultValue+defaultStep<=defaultMaxValue){
                setDefaultText(defaultValue+defaultStep,isPercent);

            }
        }
    }
    public void setDefaultText(int value,boolean isPercent){
        if (value>0){
            defaultValue=value;
            this.isPercent=isPercent;
            txt_show.setText(defaultValue+(isPercent?"%":""));
            if (onUpDownSelectListener!=null){
                onUpDownSelectListener.onUpDown(defaultValue);
            }
        }else if (value==0){
            defaultValue=value;
            this.isPercent=isPercent;
            txt_show.setText("不设置");
            if (onUpDownSelectListener!=null){
                onUpDownSelectListener.onUpDown(defaultValue);
            }
        }
    }
    public int getDefaultValue() {
        return defaultValue;
    }

    public void setDefaultValue(int defaultValue) {
        this.defaultValue = defaultValue;
    }

    public int getDefaultMaxValue() {
        return defaultMaxValue;
    }

    public void setDefaultMaxValue(int defaultMaxValue) {
        this.defaultMaxValue = defaultMaxValue;
    }

    public int getDefaultMinValue() {
        return defaultMinValue;
    }

    public void setDefaultMinValue(int defaultMinValue) {
        this.defaultMinValue = defaultMinValue;
    }

    public int getDefaultStep() {
        return defaultStep;
    }

    public void setDefaultStep(int defaultStep) {
        this.defaultStep = defaultStep;
    }


    //这个接口用于获取数据的
    public interface OnUpDownSelectListener {
        public void onUpDown(int value);
    }
}

其中里面涉及的一个布局layout.item_updown_choose如下

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/bg_updown_round">

        <FrameLayout
            android:id="@+id/zhi_yin_decrease"
            android:layout_width="35dip"
            android:layout_height="35dip"
            android:background="@drawable/decrease_shap"
            >

                <View
                    android:layout_width="match_parent"
                    android:layout_height="1dp"
                    android:layout_gravity="center"
                    android:layout_marginLeft="5dp"
                    android:layout_marginRight="5dp"
                    android:background="#FFFD7C7A"/>


        </FrameLayout>
        <EditText
            android:id="@+id/txt_show"
            android:layout_width="90dip"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:gravity="center"
            android:text="10"
            android:inputType="number"
            android:enabled="false"
            android:textColor="#323232"
            android:imeOptions="actionDone"
            android:background="@null"
            android:cursorVisible="false"
            android:textSize="13dip" />

        <FrameLayout
            android:id="@+id/zhi_yin_add"
            android:layout_width="35dip"
            android:layout_height="35dip"
            android:layout_alignParentRight="true"
            android:background="@drawable/add_shap"
            >

                <View
                    android:layout_width="match_parent"
                    android:layout_height="1dp"
                    android:layout_gravity="center"
                    android:layout_marginLeft="5dp"
                    android:layout_marginRight="5dp"
                    android:background="#FFFD7C7A"/>
                <View
                    android:layout_width="1dp"
                    android:layout_height="match_parent"
                    android:layout_gravity="center"
                    android:layout_marginBottom="5dp"
                    android:layout_marginTop="5dp"
                    android:background="#FFFD7C7A"/>


        </FrameLayout>
</RelativeLayout>

其中的一些shape文件就不一一贴出来了，大家根据自己的需求可以自己写的

上面是工具，下面是如何使用

public class MainActivity extends AppCompatActivity implements UpDownChooseView.OnUpDownSelectListener{
    UpDownChooseView up_down;
    TextView txt;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        up_down=findViewById(R.id.up_down);
        up_down.setOnUpDownSelectListener(this);

        txt=findViewById(R.id.txt);
        up_down.setDefaultText(10,true);
    }

    @Override
    public void onUpDown(int value) {
        txt.setText(value+"");
    }
}

效果图

点击加减，以及长按都可实习数据的变化。