android中判斷控件是否為空的地方非常之多,比如登錄註冊,隻要是需要填寫東西的地方基本上都需要判空。
難度不大,但是代碼相對冗雜,如果集成框架的話就相對簡單多瞭。
1.添加依賴
[java]view plaincopy
compile'com.mobsandgeeks:android-saripaar:2.0.3'[java]view plaincopy
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dp">
android:id="@+id/et1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="請輸入姓名"/>
……
android:id="@+id/et6"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="請輸入姓名"/>
android:text="Button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/button"/>
3.獲取對象並設置相應判斷類型[java]view plaincopy
@BindView(R.id.button)
Buttonbutton;
@BindView(R.id.et1)
@NotEmpty(messageResId=R.string.errorMessage)//類型
@Order(1)//第幾個
EditTextet1;
@BindView(R.id.et2)
@NotEmpty(messageResId=R.string.errorMessage)
@Order(2)
EditTextet2;[java]view plaincopy
ValidationDemo
不能為空
4.onCreate中初始化
[java]view plaincopy
validator=newValidator(this);
validator.setValidationListener(this);
兩個監聽方法
[java]view plaincopy
@Override
publicvoidonValidationSucceeded(){//不為空的時候執行
//dosomethings
//sendSubmit();
}
@Override
publicvoidonValidationFailed(Listerrors){//為空的時候執行
for(ValidationErrorerror:errors){
Viewview=error.getView();
Stringmessage=error.getCollatedErrorMessage(this);
if(viewinstanceofEditText){
((EditText)view).setError(message);
}
}
}
5.調用
[java]view plaincopy
@Override
publicvoidonClick(Viewview){
switch(view.getId()){
caseR.id.button:
validator.validate();
break;
}
}
6.擴展(非空、郵箱等)
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/