dependencies {
 compile 'com.mengfei:AddSubUtils:1.0.0'
}

dependencies {
 compile project(':addsubutils')
}

    <com.mengfei.AddSubUtils
        android:id="@+id/add_sub"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

 <com.mengfei.AddSubUtils
        android:id="@+id/add_sub_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        jmf:editable="true"
        jmf:ImageWidth="60dp"
        jmf:contentTextColor="@color/colorText"
        jmf:contentWidth="120dp"
        jmf:contentTextSize="16sp"
        jmf:contentBackground="@color/material_teal_200"
        jmf:leftBackground="@drawable/left_selector"
        jmf:rightBackground="@drawable/right_selector"
        jmf:leftResources="@drawable/minus"
        jmf:rightResources="@drawable/plus"/>

 AddSubUtils addSubUtils = (AddSubUtils) findViewById(R.id.add_sub);
        addSubUtils.setBuyMax(30)       // 最大购买数，默认为int的最大值
                .setInventory(50)       // 库存，默认为int的最大值
                .setCurrentNumber(5)    // 设置当前数，默认为1
                .setStep(5)             // 步长，默认为1
                .setBuyMin(2)           // 购买的最小值，默认为1
                .setOnWarnListener(new AddSubUtils.OnWarnListener() {
                    @Override
                    public void onWarningForInventory(int inventory) {
                        Toast.makeText(MainActivity.this, "当前库存:" + inventory, Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onWarningForBuyMax(int max) {
                        Toast.makeText(MainActivity.this, "超过最大购买数:" + max, Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onWarningForBuyMin(int min) {
                        Toast.makeText(MainActivity.this, "低于最小购买数:" + min, Toast.LENGTH_SHORT).show();
                    }
                });