android 自定义商城app价格正序倒序控件

来源：互联网发布：2017网络谣言典型案例编辑：程序博客网时间：2024/04/29 19:53

1.效果图如下：

2.自定义视图布局文件 price_up_down.xml

<?xml version="1.0" encoding="utf-8"?><TextView xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="价格"    android:textColor="#a4a4a4"    android:id="@+id/price_id"/>

3.自定义视图代码 PriceUpDownView.java

package net.sytm.priceupdowndemo;import android.content.Context;import android.graphics.Color;import android.graphics.drawable.Drawable;import android.support.annotation.Nullable;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.widget.LinearLayout;import android.widget.TextView;/** * Created by aoc on 2017/4/11. */public class PriceUpDownView extends LinearLayout implements View.OnClickListener {    private TextView priceView;    private boolean isUp;    private Callback callback;    public PriceUpDownView(Context context) {        this(context, null);    }    public PriceUpDownView(Context context, @Nullable AttributeSet attrs) {        this(context, attrs, 0);    }    public PriceUpDownView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        initView(context);    }    private void initView(Context context) {        LayoutInflater.from(context).inflate(R.layout.price_up_down, this);        priceView = (TextView) findViewById(R.id.price_id);        priceView.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.price_id:                setDrawable();                callback.getStatus(isUp);                break;        }    }    private void setDrawable() {        Drawable drawable = null;        if (isUp) {            isUp = false;            drawable = getResources().getDrawable(R.drawable.xia);        }        else {            isUp = true;            drawable = getResources().getDrawable(R.drawable.shang);        }        drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());        priceView.setCompoundDrawables(null, null, drawable, null);        priceView.setCompoundDrawablePadding(8);        priceView.setTextColor(Color.parseColor("#e02b4d"));    }    public  interface Callback {        void getStatus(boolean isUp);    }    public void setCallback(Callback callback) {        this.callback = callback;    }}

4.使用示例

a.视图布局引用

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="net.sytm.priceupdowndemo.MainActivity">    <net.sytm.priceupdowndemo.PriceUpDownView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/price_up_down_id">    </net.sytm.priceupdowndemo.PriceUpDownView></LinearLayout>

b.代码

package net.sytm.priceupdowndemo;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;public class MainActivity extends AppCompatActivity implements PriceUpDownView.Callback {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        PriceUpDownView upDownView = (PriceUpDownView) findViewById(R.id.price_up_down_id);        upDownView.setCallback(this);    }    @Override    public void getStatus(boolean isUp) {        ToastUtil.showShort(this, isUp ? "上" : "下");    }}

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