Android之表单验证,Validation三方集成。

2022-06-10 10:59:41 浏览数 (1)

android中判断控件是否为空的地方非常之多,比如登录注册,只要是需要填写东西的地方基本上都需要判空。

难度不大,但是代码相对冗杂,如果集成框架的话就相对简单多了。

1.添加依赖

代码语言:javascript复制
compile 'com.mobsandgeeks:android-saripaar:2.0.3'

2.布局

代码语言:javascript复制
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@ id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="10dp">

    <EditText
        android:id="@ id/et1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入姓名" />

        ......

    <EditText
        android:id="@ id/et6"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入姓名" />

    <Button
        android:text="Button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@ id/button" />

</LinearLayout>

3.获取对象并设置相应判断类型

代码语言:javascript复制
    @BindView(R.id.button)
    Button button;

    @BindView(R.id.et1)
    @NotEmpty(messageResId = R.string.errorMessage)//类型
    @Order(1)//第几个
    EditText et1;
    @BindView(R.id.et2)
    @NotEmpty(messageResId = R.string.errorMessage)
    @Order(2)
    EditText et2;

strings.xml

代码语言:javascript复制
<resources>
    <string name="app_name">ValidationDemo</string>
    <string name="errorMessage">不能为空</string>
</resources>

4.onCreate中初始化

代码语言:javascript复制
validator = new Validator(this);
validator.setValidationListener(this);

两个监听方法

代码语言:javascript复制
    @Override
    public void onValidationSucceeded() {//不为空的时候执行
        //do somethings
        //sendSubmit();
    }

    @Override
    public void onValidationFailed(List<ValidationError> errors) {//为空的时候执行
        for (ValidationError error : errors) {
            View view = error.getView();
            String message = error.getCollatedErrorMessage(this);
            if (view instanceof EditText) {
                ((EditText) view).setError(message);
            }
        }
    }

5.调用

代码语言:javascript复制
    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.button:
                validator.validate();
                break;
        }
    }

6.扩展(非空、邮箱等)

NotEmpty @NotEmpty(messageId = R.string.validation_name, order = 1) private EditText mNameEditText;

MaxLength MinLength

@MinLength(value = 1, messageId = R.string.validation_participants, order = 2) private EditText mNameEditText;

MaxValue MinValue

@MinValue(value = 2L, messageId = R.string.validation_name_length) private EditText mEditNumberOfParticipants;

MaxNumberValue MinNumberValue

@MinNumberValue(value = "5.5", messageId = R.string.validation_name_length) private EditText mEditPotentialOfHydrogen;

RegExp

@RegExp(value = EMAIL, messageId = R.string.validation_valid_email) private EditText mEditEmail; @RegExp(value = "^[0-9] $", messageId = R.string.validation_valid_count) private EditText mEditCount;

DateInFuture

@DateInFuture(messageId = R.string.validation_date) private TextView mTxtDate;

DateNoWeekend

@DateNoWeekend(messageId = R.string.validation_date_weekend) private TextView mTxtDate;

Custom

@Custom(value = MyVeryOwnValidator.class, messageId = R.string.validation_custom) private EditText mNameEditText;

Demo地址:https://github.com/yechaoa/ValidationDemo

github:https://github.com/ragunathjawahar/android-saripaar/

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