آموزش ConstraintLayout در برنامه نویسی اندروید

0 پاسخ به “آموزش ConstraintLayout در برنامه نویسی اندروید”

1. بازتاب: آموزش قرار دادن json در Expandable Recyclerview - آموزش برنامه نویسی

2. بسیار عالی
   ممنونم

   پاسخ

   1. خواهش می کنم.

      پاسخ
3. بازتاب: آموزش Absolute Layout در برنامه نویسی اندروید - آموزش برنامه نویسی
4. بازتاب: ایجاد رویداد کلیک برای دکمه به زبان کوتلین در اندروید - آموزش برنامه نویسی
5. بازتاب: آموزش سرچ در RecyclerView در برنامه نویسی اندروید - آموزش برنامه نویسی

6. خیلی مختصر و مفید بود دست شما دردنکنه

   پاسخ

   1. خواهش می کنم موفق باشید.

      پاسخ

7. سلام می خوام به constraint Layout اسکرول بدم چطور از اسکرول ویو در این لایه استفاده کنم ؟ اسکرول ویو را داخل کانسترینت لایوت قرار بدم یا کانسترینت لایوت را داخل اسکرول ویو قرار بدم؟

   پاسخ

   1. سلام و درود کد زیر را بررسی کنید و دقت کنید از آخرین ورژن constraint layout استفاده کنید ورژن های قدیمی scrollview را پشتیبانی نمی کنند.

      <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout android:orientation="vertical" 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" android:id="@+id/activity_main" tools:context=".ScrollViewActivity"> <ScrollView android:layout_width="0dp" android:layout_height="wrap_content" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" > <android.support.constraint.ConstraintLayout 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="wrap_content" android:orientation="vertical" android:paddingLeft="8dp" android:paddingRight="8dp" android:scrollbars="vertical"> <TextView android:id="@+id/tvCommonSurname" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="surname" android:textAppearance="?android:attr/textAppearanceLarge" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toTopOf="parent" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1" /> <EditText android:id="@+id/editText3" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:ems="10" android:inputType="text" android:maxLines="1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/tvCommonSurname" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_constraintTop_creator="1" /> <TextView android:id="@+id/tvCommonName" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="firstName" android:textAppearance="?android:attr/textAppearanceLarge" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toBottomOf="@+id/editText3" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1" /> <EditText android:id="@+id/editText" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:ems="10" android:inputType="text" android:maxLines="1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/tvCommonName" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_constraintTop_creator="1" /> <TextView android:id="@+id/tvCommonLastName" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="middleName" android:textAppearance="?android:attr/textAppearanceLarge" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toBottomOf="@+id/editText" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1" /> <EditText android:id="@+id/editText2" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:ems="10" android:inputType="text" android:maxLines="1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/tvCommonLastName" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_constraintTop_creator="1" /> <TextView android:id="@+id/tvCommonPhone" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="Phone number" android:textAppearance="?android:attr/textAppearanceLarge" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toBottomOf="@+id/editText2" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1" /> <EditText android:id="@+id/editText4" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:digits="0123456789" android:ems="10" android:inputType="phone" android:maxLength="10" android:maxLines="1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/tvCommonPhone" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_constraintTop_creator="1" /> <TextView android:id="@+id/textView3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="sex" android:textAppearance="?android:attr/textAppearanceLarge" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toBottomOf="@+id/editText4" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1" /> <RadioGroup xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/radiogroup" android:layout_width="0dp" android:layout_height="48dp" android:layout_marginTop="8dp" android:orientation="horizontal" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toBottomOf="@+id/textView3" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1"> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="pirates" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="ninjas" /> </RadioGroup> <TextView android:id="@+id/tvCommonDOB" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="dob" android:textAppearance="?android:attr/textAppearanceLarge" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toBottomOf="@+id/radiogroup" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1" /> <EditText android:id="@+id/editText5" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:ems="10" android:inputType="date" android:maxLines="1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/tvCommonDOB" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_constraintTop_creator="1" /> <TextView android:id="@+id/tvCommonLivingCity" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="livingCity" android:textAppearance="?android:attr/textAppearanceLarge" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toBottomOf="@+id/editText5" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1" /> <EditText android:id="@+id/editText34" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:ems="10" android:inputType="text" android:maxLines="1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/tvCommonLivingCity" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_constraintTop_creator="1" /> <TextView android:id="@+id/tvCommonPlaceOfBithday" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="placeOfBirth" android:textAppearance="?android:attr/textAppearanceLarge" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toBottomOf="@+id/editText34" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1" /> <EditText android:id="@+id/editText6" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:ems="10" android:inputType="text" android:maxLines="1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/tvCommonPlaceOfBithday" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_constraintTop_creator="1" /> <TextView android:id="@+id/textView4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="education" android:textAppearance="?android:attr/textAppearanceLarge" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toBottomOf="@+id/editText6" tools:layout_constraintLeft_creator="1" tools:layout_constraintTop_creator="1" /> <Spinner android:id="@+id/spinner_id" android:layout_width="0dp" android:layout_height="48dp" android:layout_marginTop="8dp" android:spinnerMode="dialog" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/textView4" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_constraintTop_creator="1" /> </android.support.constraint.ConstraintLayout> </ScrollView> </android.support.constraint.ConstraintLayout>

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      <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout     android:orientation="vertical"     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"     android:id="@+id/activity_main"     tools:context=".ScrollViewActivity">     <ScrollView         android:layout_width="0dp"         android:layout_height="wrap_content"         app:layout_constraintLeft_toLeftOf="parent"         app:layout_constraintRight_toRightOf="parent"         >         <android.support.constraint.ConstraintLayout 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="wrap_content"             android:orientation="vertical"             android:paddingLeft="8dp"             android:paddingRight="8dp"             android:scrollbars="vertical">             <TextView                 android:id="@+id/tvCommonSurname"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:text="surname"                 android:textAppearance="?android:attr/textAppearanceLarge"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toTopOf="parent"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1" />             <EditText                 android:id="@+id/editText3"                 android:layout_width="0dp"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:ems="10"                 android:inputType="text"                 android:maxLines="1"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintRight_toRightOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/tvCommonSurname"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintRight_creator="1"                 tools:layout_constraintTop_creator="1" />             <TextView                 android:id="@+id/tvCommonName"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:text="firstName"                 android:textAppearance="?android:attr/textAppearanceLarge"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/editText3"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1" />             <EditText                 android:id="@+id/editText"                 android:layout_width="0dp"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:ems="10"                 android:inputType="text"                 android:maxLines="1"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintRight_toRightOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/tvCommonName"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintRight_creator="1"                 tools:layout_constraintTop_creator="1" />             <TextView                 android:id="@+id/tvCommonLastName"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:text="middleName"                 android:textAppearance="?android:attr/textAppearanceLarge"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/editText"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1" />             <EditText                 android:id="@+id/editText2"                 android:layout_width="0dp"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:ems="10"                 android:inputType="text"                 android:maxLines="1"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintRight_toRightOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/tvCommonLastName"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintRight_creator="1"                 tools:layout_constraintTop_creator="1" />             <TextView                 android:id="@+id/tvCommonPhone"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:text="Phone number"                 android:textAppearance="?android:attr/textAppearanceLarge"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/editText2"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1" />             <EditText                 android:id="@+id/editText4"                 android:layout_width="0dp"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:digits="0123456789"                 android:ems="10"                 android:inputType="phone"                 android:maxLength="10"                 android:maxLines="1"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintRight_toRightOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/tvCommonPhone"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintRight_creator="1"                 tools:layout_constraintTop_creator="1" />             <TextView                 android:id="@+id/textView3"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:text="sex"                 android:textAppearance="?android:attr/textAppearanceLarge"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/editText4"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1" />             <RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"                 android:id="@+id/radiogroup"                 android:layout_width="0dp"                 android:layout_height="48dp"                 android:layout_marginTop="8dp"                 android:orientation="horizontal"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/textView3"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1">                 <RadioButton                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:text="pirates" />                 <RadioButton                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:text="ninjas" />             </RadioGroup>             <TextView                 android:id="@+id/tvCommonDOB"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:text="dob"                 android:textAppearance="?android:attr/textAppearanceLarge"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/radiogroup"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1" />             <EditText                 android:id="@+id/editText5"                 android:layout_width="0dp"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:ems="10"                 android:inputType="date"                 android:maxLines="1"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintRight_toRightOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/tvCommonDOB"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintRight_creator="1"                 tools:layout_constraintTop_creator="1" />             <TextView                 android:id="@+id/tvCommonLivingCity"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:text="livingCity"                 android:textAppearance="?android:attr/textAppearanceLarge"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/editText5"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1" />             <EditText                 android:id="@+id/editText34"                 android:layout_width="0dp"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:ems="10"                 android:inputType="text"                 android:maxLines="1"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintRight_toRightOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/tvCommonLivingCity"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintRight_creator="1"                 tools:layout_constraintTop_creator="1" />             <TextView                 android:id="@+id/tvCommonPlaceOfBithday"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:text="placeOfBirth"                 android:textAppearance="?android:attr/textAppearanceLarge"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/editText34"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1" />             <EditText                 android:id="@+id/editText6"                 android:layout_width="0dp"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:ems="10"                 android:inputType="text"                 android:maxLines="1"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintRight_toRightOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/tvCommonPlaceOfBithday"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintRight_creator="1"                 tools:layout_constraintTop_creator="1" />             <TextView                 android:id="@+id/textView4"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginTop="8dp"                 android:text="education"                 android:textAppearance="?android:attr/textAppearanceLarge"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/editText6"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintTop_creator="1" />             <Spinner                 android:id="@+id/spinner_id"                 android:layout_width="0dp"                 android:layout_height="48dp"                 android:layout_marginTop="8dp"                 android:spinnerMode="dialog"                 app:layout_constraintLeft_toLeftOf="parent"                 app:layout_constraintRight_toRightOf="parent"                 app:layout_constraintTop_toBottomOf="@+id/textView4"                 tools:layout_constraintLeft_creator="1"                 tools:layout_constraintRight_creator="1"                 tools:layout_constraintTop_creator="1" />         </android.support.constraint.ConstraintLayout>     </ScrollView> </android.support.constraint.ConstraintLayout>

      موفق باشید.

      پاسخ

      1. میگم قبلا داخل scrollview از linearLayout استفاده می کردیم اینجا نیاز نیست که از linear استفاده کنیم؟

         پاسخ

         1. خیر لازم نیست باید به صورت خاص استفاده کنید.

            پاسخ

8. سلام
   آیا صرف استفاده از این لی اوت باعث درست اجرا شدن برنامه روی سایزهای مختلف صفحه نمایش می شود یا باید کار خاص دیگه ای روش انجام بدیم ؟
   یعنی استفاده از این لایه و چیدمان ویوهای موردنظرمان درون آن آیا کافیه ؟ و از RelativeLayout و linearLayout در برنامه قاعدتا نباید استفاده کنیم دیگه.
   ممنون میشم اگه در این مورد توضیح بدید چون میخوام برنامم روی هر سایزی درست اجرا بشه .

   پاسخ

   1. سلام اگر اصولی ایجاد شود نیازی نیست ولی شما خواسته یا نخواسته باید با Linear و غیره کار کنید حتی در ConstraintLayout
      موفق باشید.

      پاسخ

      1. بسیار سپاسگزارم …

         پاسخ