自定义一个购物车加减控件，可以加减数量，可以编辑数量，可以设置数量最大值（库存数量）最小值（最少购买数量）
购物车加减 .png
002.png
public class ParityAddDelView extends LinearLayout {
private OnAddDelClickListener listener;
private TextView tvNumber;
private int editNum = 0;
private Button btnAdd, btnDel;
private int minNum = 0;
private int maxNum = 9999999;
public void setOnAddDelClickListener(OnAddDelClickListener listener) {
if (listener != null) {
this.listener = listener;
}
}
public interface OnAddDelClickListener {
void onAddClick(int mNum);
// void onDelClick(View v);
}
public ParityAddDelView(Context context) {
this(context, null);
}
public ParityAddDelView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs, 0);
}
public ParityAddDelView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView(context, attrs, defStyleAttr);
}
private void initView(final Context context, AttributeSet attrs, int defStyleAttr) {
View.inflate(context, R.layout.layout_add_del_parity, this);
btnAdd = findViewById(R.id.but_add);
btnDel = findViewById(R.id.but_delete);
tvNumber = findViewById(R.id.et_number);
String middle_text = tvNumber.getText().toString().trim();
if (TextUtils.isEmpty(middle_text)) {
middle_text = "0";
}
editNum = Integer.parseInt(middle_text);
btnAdd.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
editNum = getNumber();
if (editNum <= 0) {
editNum = 0;
}
if (maxNum == 0) {
editNum = 0;
} else if (editNum < minNum) {
editNum = minNum;
} else if (editNum >= maxNum) {
editNum = maxNum;
} else {
editNum++;
}
setClickNumber(editNum);
if (listener != null)
listener.onAddClick(editNum);
}
});
btnDel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
editNum = getNumber();
if (editNum <= 0) {
editNum = 0;
} else if (editNum > maxNum) {
editNum = maxNum;
} else if (editNum <= minNum) {
editNum = 0;
} else {
editNum--;
}
setClickNumber(editNum);
if (listener != null)
listener.onAddClick(editNum);
}
});
tvNumber.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
showEditNumDialog(context);
}
});
}
/**
* 手动编辑购物车购买数量
* @param context
*/
private void showEditNumDialog(Context context) {
final AddDelDialog dialog = new AddDelDialog(context);
dialog.setNumber(getNumber(), maxNum, minNum);
dialog.setOnConfirmclickListener(new AddDelDialog.OnConfirmclickListener() {
@Override
public void onConfirmClick(int number) {
setNumber(number);
if (listener != null) {
listener.onAddClick(getNumber());
}
dialog.dismiss();
}
});
dialog.show();
}
private void setClickNumber(int number) {
if (number > 0) {
tvNumber.setText(number + "");
} else {
tvNumber.setText("0");
}
}
/**
* 对外提供设置EditText值的方法
*/
public void setNumber(int number) {
if (number > 0) {
if (number > maxNum) {
tvNumber.setText(maxNum + "");
} else if (number < minNum) {
tvNumber.setText("0");
} else {
tvNumber.setText(number + "");
}
} else {
tvNumber.setText("0");
}
}
/**
* 得到控件原来的值
*/
public int getNumber() {
int number = 0;
try {
String numberStr = tvNumber.getText().toString().trim();
number = Integer.valueOf(numberStr);
} catch (Exception e) {
number = 0;
}
return number;
}
/**
* 设置最小值
*
* @param number
*/
public void setMinNum(int number) {
if (number > 0) {
minNum = number;
} else {
minNum = 0;
}
}
/**
* 设置最大值
*
* @param number
*/
public void setMaxNum(int number) {
if (number >= 0) {
maxNum = number;
} else {
maxNum = 0;
}
}
}
布局文件
<?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="35dp"
>
<Button
android:id="@+id/but_delete"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_gravity="center"
android:background="@drawable/selector_shopcart_minus_btn"
android:gravity="center"
android:text="—"
android:textColor="@color/black_33"
android:textSize="12sp"
/>
<TextView
android:id="@+id/et_number"
android:layout_width="wrap_content"
android:layout_height="35dp"
android:layout_gravity="center"
android:layout_toRightOf="@+id/but_delete"
android:background="@android:color/white"
android:gravity="center"
android:text="0"
android:inputType="number"
android:minWidth="30dp"
android:textColor="@color/black_66"
android:textSize="14sp"
/>
<View
android:layout_width="wrap_content"
android:layout_height="1dp"
android:layout_toLeftOf="@+id/but_add"
android:layout_toRightOf="@+id/but_delete"
android:background="@color/gray_e6"
/>
<View
android:layout_width="wrap_content"
android:layout_height="1dp"
android:layout_alignBottom="@+id/but_delete"
android:layout_toLeftOf="@+id/but_add"
android:layout_toRightOf="@+id/but_delete"
android:background="@color/gray_e6"
/>
<Button
android:id="@+id/but_add"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_gravity="center"
android:layout_toRightOf="@+id/et_number"
android:background="@drawable/selector_shopcart_add_btn"
android:gravity="center"
android:text="+"
android:textColor="@color/black_33"
android:textSize="12sp"
/>
弹出的编辑框
public class AddDelDialog extends Dialog {
private Button btConfim;
private Button btWait;
private Button btAdd;
private Button btDel;
private EditText etNum;
private int editNumber;
private int minNum = 0;
private int maxNum = 9999999;
private OnConfirmclickListener onConfirmclickListener;
public AddDelDialog(@NonNull Context context) {
super(context, R.style.SimpleDialog);
}
public AddDelDialog(@NonNull Context context, @StyleRes int themeResId) {
super(context, themeResId);
}
protected AddDelDialog(@NonNull Context context, boolean cancelable, @Nullable OnCancelListener cancelListener) {
super(context, cancelable, cancelListener);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dialog_edit_num);
setCanceledOnTouchOutside(false);
initView();
}
private void initView() {
btConfim = findViewById(R.id.yes);
btWait = findViewById(R.id.no);
btAdd = findViewById(R.id.but_add);
btDel = findViewById(R.id.but_delete);
etNum = findViewById(R.id.et_number);
etNum.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
if(getNum()>maxNum){
setNumber(maxNum);
}
}
});
btConfim.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onConfirmclickListener.onConfirmClick(getNum());
}
});
btWait.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dismiss();
}
});
btAdd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
editNumber = getNum();
if (editNumber <= 0) {
editNumber = 0;
}
if (maxNum == 0) {
editNumber = 0;
} else if (editNumber < minNum) {
editNumber = minNum;
} else if (editNumber >= maxNum) {
editNumber = maxNum;
} else {
editNumber++;
}
setNumber(editNumber);
}
});
btDel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
editNumber = getNum();
if (editNumber <= 0) {
editNumber = 0;
} else {
editNumber--;
}
setNumber(editNumber);
}
});
etNum.setText(editNumber+"");
etNum.setSelection(etNum.length());
}
public int getNum(){
int number = 0;
try {
String numberStr = etNum.getText().toString().trim();
number = Integer.valueOf(numberStr);
} catch (Exception e) {
number = 0;
}
return number;
}
public interface OnConfirmclickListener {
void onConfirmClick(int number);
}
public void setNumber(int number,int maxNum,int minNum){
this.editNumber =number;
this.maxNum = maxNum;
this.minNum =minNum;
}
public void setOnConfirmclickListener(OnConfirmclickListener onConfirmclickListener){
this.onConfirmclickListener = onConfirmclickListener;
}
public void setNumber(int number) {
if (number >= 0) {
if (number > maxNum) {
etNum.setText(maxNum + "");
}
etNum.setText(number + "");
} else {
etNum.setText("0");
}
etNum.setSelection(etNum.length());
}
}
弹窗布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:background="@android:color/white">
<TextView
android:id="@+id/dialog_et_num_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:gravity="center"
android:text="修改购买数量"
android:textColor="@color/black_33"
android:textSize="14sp"
/>
<RelativeLayout
android:id="@+id/rl_add_del"
android:layout_width="wrap_content"
android:layout_height="35dp"
android:layout_below="@+id/dialog_et_num_title"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
>
<Button
android:id="@+id/but_delete"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_gravity="center"
android:background="@drawable/selector_shopcart_minus_btn"
android:gravity="center"
android:text="—"
android:textColor="@color/black_33"
android:textSize="12sp"
/>
<EditText
android:id="@+id/et_number"
android:layout_width="wrap_content"
android:layout_height="35dp"
android:layout_gravity="center"
android:layout_toRightOf="@+id/but_delete"
android:background="@android:color/white"
android:gravity="center"
android:inputType="number"
android:lines="1"
android:maxLength="10"
android:minWidth="30dp"
android:textColor="@color/black_66"
android:textSize="10dp"
android:text="0"
/>
<View
android:layout_width="wrap_content"
android:layout_height="1dp"
android:layout_toLeftOf="@+id/but_add"
android:layout_toRightOf="@+id/but_delete"
android:background="@color/gray_e6"
/>
<View
android:layout_width="wrap_content"
android:layout_height="1dp"
android:layout_alignBottom="@+id/but_delete"
android:layout_toLeftOf="@+id/but_add"
android:layout_toRightOf="@+id/but_delete"
android:background="@color/gray_e6"
/>
<Button
android:id="@+id/but_add"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_gravity="center"
android:layout_toRightOf="@+id/et_number"
android:background="@drawable/selector_shopcart_add_btn"
android:gravity="center"
android:text="+"
android:textColor="@color/black_33"
android:textSize="12sp"
/>
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="35dp"
android:layout_below="@+id/rl_add_del"
android:layout_marginTop="20dp"
android:background="@drawable/shape_simple_dialog"
android:orientation="horizontal">
<Button
android:id="@+id/no"
android:layout_width="0dp"
android:layout_height="35dp"
android:layout_weight="1"
android:background="@color/black_99"
android:gravity="center"
android:singleLine="true"
android:text="我再想想"
android:textColor="@android:color/white"
android:textSize="16sp"/>
<View
android:layout_width="1px"
android:layout_height="match_parent"
android:background="#E4E4E4"/>
<Button
android:id="@+id/yes"
android:layout_width="0dp"
android:layout_height="35dp"
android:layout_weight="1"
android:background="#e60012"
android:gravity="center"
android:singleLine="true"
android:text="确定"
android:textColor="@android:color/white"
android:textSize="16sp"/>
</LinearLayout>
弹窗style
<style name="SimpleDialog" parent="@android:style/Theme.Dialog">
<item name="android:windowIsFloating">true</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:backgroundDimEnabled">true</item>
<item name="android:windowFrame">@null</item>
</style>
网友评论