Android App Dev - LayoutInflater.

[niyomax]

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Android app dev කරන අයගෙන් පොඩි හෙල්ප් එකක් ඕන. Android dev වල LayoutInflater එක පොඩ්ඩක් උදාහරණයක් එක්ක පැහැදිලි කරල දෙනවද ? ලොකු පිනක් මචංලා. කොච්චර කියව්වත් , බැලුවත් විඩියෝ එකක් වැදුනේ නෑ ඒක ගැන හරියට

තව පොඩි ප්‍රශ්නයක් තියෙයි

දැන් අපි අපි හදන්න යන ඇප් එකේ UI එකට අනුව මොන layout එකක් ද එන්නේ කියල තිරනේ කරනවනේ. ප්‍රැක්ටිකලි වැඩියෙන්ම යූස් වෙන්නේ RelativeLayout එකද ? මොකද ඕනේ ම screen එකකට adjust වෙනව ? ඒ ගැනත් දැනගන්න කැමතියි.

anith aya BUMP paarak danna machanla

 

[DooA]

Practically කොහොමද දන්නේ නෑ.
මම නම් use කරන්නේ linear layout.

දන්නා විදියට LayoutInflater කරන්නේ XML UI කෑලි java object වලට convert කරන එක.

හරියටම දන්නා කෙනෙක් කියලා දෙයි ​

 

[niyomax]

Practically කොහොමද දන්නේ නෑ.
මම නම් use කරන්නේ linear layout.

දන්නා විදියට LayoutInflater කරන්නේ XML UI කෑලි java object වලට convert කරන එක.

හරියටම දන්නා කෙනෙක් කියලා දෙයි ​

Thanx kolla.. ow machan ohoma idea ekak aawa..but hariyata wedune ne ban..thanx macho

 

[DooA]

Thanx kolla.. ow machan ohoma idea ekak aawa..but hariyata wedune ne ban..thanx macho

Head first Android development 2015 එක කියවපන් මචං.
මාත් මේ දවස් වල වෙලාව තියෙන විදියට කියවනවා. එකේ ඕවා ඔක්කොම විස්තර කරලා තියෙනවා.
තාම බාගයයි ඉවර ඉතුරු ටික ඉවර උනාම ඕකට විස්තර සහිතව උත්තරයක් දෙන්න පුළුවන් වෙයි කියලා හිතනවා

 

[asiridol]

layoutinflater eken karanne view ekakata xml file eke thiyena layout eka load karanawa wage scene ekak.. layout design karaddi layout managers okkoma kalawame use karanna.. relative, frame, table, linear oya okkoma samahara welawata one wenawa..

 

[niyomax]

layoutinflater eken karanne view ekakata xml file eke thiyena layout eka load karanawa wage scene ekak.. layout design karaddi layout managers okkoma kalawame use karanna.. relative, frame, table, linear oya okkoma samahara welawata one wenawa..

tikak pehedili karala denna puluwanda machoo..thanx wewa

 

[niyomax]

Head first Android development 2015 එක කියවපන් මචං.
මාත් මේ දවස් වල වෙලාව තියෙන විදියට කියවනවා. එකේ ඕවා ඔක්කොම විස්තර කරලා තියෙනවා.
තාම බාගයයි ඉවර ඉතුරු ටික ඉවර උනාම ඕකට විස්තර සහිතව උත්තරයක් දෙන්න පුළුවන් වෙයි කියලා හිතනවා

man vdos tikak balamin inne..head first eka bewa machan...print karagena balanna puluwannan patta uba pc eke daagena kiyawanawada

 

[asiridol]

tikak pehedili karala denna puluwanda machoo..thanx wewa

koi kallada explain karanna one? normally activity ekakata layout ekak load karanne activity eke setcontentview method eken.. fragment ekakata onCreateView method eka override karala..

eth onema view ekakata layout ekak inflate karanna puluwan..
ex/ reusable listview cell ekakata, dialogfragment ekaka content view ekata etc.

layoutmanagers godak use karanna wenawa samahara welawata..
ex/

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:minWidth="25px"
    android:minHeight="25px"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/linearLayout1"
    android:gravity="center"
    android:textAlignment="center"
    android:background="#FFFFFF"
    android:padding="10dp">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:textAlignment="viewEnd"
        android:gravity="top">
        <TextView
            android:text="Welcome"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            style="@style/textBigStyle"
            android:id="@+id/textHeader"
            android:paddingBottom="25dp"
            android:paddingTop="15dp" />
        <TextView
            android:text="Welcome"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/textMessage"
            android:paddingLeft="40dp"
            android:paddingRight="40dp"
            android:paddingBottom="50dp"
            android:lines="2"
            android:gravity="center_horizontal"
            style="@style/textExtraSmallStyle"
            android:layout_marginRight="0.0dp" />
        <TableLayout xmlns:tools="http://schemas.android.com/tools"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:textAlignment="center">
            <TableRow
                android:paddingTop="15dp">
                <RelativeLayout
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_gravity="center"
                    android:layout_centerHorizontal="true">
                    <View
                        android:layout_width="60dp"
                        android:layout_height="60dp"
                        android:id="@+id/PinView1Empty"
                        android:background="@drawable/CircleEmpty"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true" />
                    <View
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:id="@+id/PinView1Full"
                        android:background="@drawable/CircleFull"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true"
                        tools:visibility="gone" />
                </RelativeLayout>
                <RelativeLayout
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_gravity="center"
                    android:layout_centerHorizontal="true">
                    <View
                        android:layout_width="60dp"
                        android:layout_height="60dp"
                        android:id="@+id/PinView2Empty"
                        android:background="@drawable/CircleEmpty"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true" />
                    <View
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:id="@+id/PinView2Full"
                        android:background="@drawable/CircleFull"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true"
                        tools:visibility="gone" />
                </RelativeLayout>
                <RelativeLayout
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_gravity="center"
                    android:layout_centerHorizontal="true">
                    <View
                        android:layout_width="60dp"
                        android:layout_height="60dp"
                        android:id="@+id/PinView3Empty"
                        android:background="@drawable/CircleEmpty"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true" />
                    <View
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:id="@+id/PinView3Full"
                        android:background="@drawable/CircleFull"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true"
                        tools:visibility="gone" />
                </RelativeLayout>
                <RelativeLayout
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_gravity="center"
                    android:layout_centerHorizontal="true">
                    <View
                        android:layout_width="60dp"
                        android:layout_height="60dp"
                        android:id="@+id/PinView4Empty"
                        android:background="@drawable/CircleEmpty"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true" />
                    <View
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:id="@+id/PinView4Full"
                        android:background="@drawable/CircleFull"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true"
                        tools:visibility="gone" />
                </RelativeLayout>
            </TableRow>
        </TableLayout>
        <LinearLayout
            android:layout_gravity="bottom"
            android:textAlignment="textEnd"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1">
            <GridLayout
                android:columnCount="3"
                android:rowCount="4"
                android:layout_height="wrap_content"
                android:layout_width="match_parent"
                android:layout_gravity="bottom"
                android:id="@+id/buttonGrid">
                <Button
                    android:id="@+id/button1"
                    android:text="1"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button2"
                    android:text="2"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button3"
                    android:text="3"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button4"
                    android:text="4"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button5"
                    android:text="5"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button6"
                    android:text="6"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button7"
                    android:text="7"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button8"
                    android:text="8"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button9"
                    android:text="9"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/buttonDel"
                    android:text="DEL"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button0"
                    android:text="0"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/buttonOk"
                    android:text="OK"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
            </GridLayout>
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

 

[DooA]

man vdos tikak balamin inne..head first eka bewa machan...print karagena balanna puluwannan patta uba pc eke daagena kiyawanawada

phone එකේ බන්. ගෙදර නිකන් ඉන්න වෙලාවට තමයි

 

[niyomax]

koi kallada explain karanna one? normally activity ekakata layout ekak load karanne activity eke setcontentview method eken.. fragment ekakata onCreateView method eka override karala..

eth onema view ekakata layout ekak inflate karanna puluwan..
ex/ reusable listview cell ekakata, dialogfragment ekaka content view ekata etc.

layoutmanagers godak use karanna wenawa samahara welawata..
ex/

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:minWidth="25px"
    android:minHeight="25px"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/linearLayout1"
    android:gravity="center"
    android:textAlignment="center"
    android:background="#FFFFFF"
    android:padding="10dp">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:textAlignment="viewEnd"
        android:gravity="top">
        <TextView
            android:text="Welcome"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            style="@style/textBigStyle"
            android:id="@+id/textHeader"
            android:paddingBottom="25dp"
            android:paddingTop="15dp" />
        <TextView
            android:text="Welcome"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/textMessage"
            android:paddingLeft="40dp"
            android:paddingRight="40dp"
            android:paddingBottom="50dp"
            android:lines="2"
            android:gravity="center_horizontal"
            style="@style/textExtraSmallStyle"
            android:layout_marginRight="0.0dp" />
        <TableLayout xmlns:tools="http://schemas.android.com/tools"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:textAlignment="center">
            <TableRow
                android:paddingTop="15dp">
                <RelativeLayout
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_gravity="center"
                    android:layout_centerHorizontal="true">
                    <View
                        android:layout_width="60dp"
                        android:layout_height="60dp"
                        android:id="@+id/PinView1Empty"
                        android:background="@drawable/CircleEmpty"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true" />
                    <View
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:id="@+id/PinView1Full"
                        android:background="@drawable/CircleFull"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true"
                        tools:visibility="gone" />
                </RelativeLayout>
                <RelativeLayout
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_gravity="center"
                    android:layout_centerHorizontal="true">
                    <View
                        android:layout_width="60dp"
                        android:layout_height="60dp"
                        android:id="@+id/PinView2Empty"
                        android:background="@drawable/CircleEmpty"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true" />
                    <View
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:id="@+id/PinView2Full"
                        android:background="@drawable/CircleFull"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true"
                        tools:visibility="gone" />
                </RelativeLayout>
                <RelativeLayout
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_gravity="center"
                    android:layout_centerHorizontal="true">
                    <View
                        android:layout_width="60dp"
                        android:layout_height="60dp"
                        android:id="@+id/PinView3Empty"
                        android:background="@drawable/CircleEmpty"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true" />
                    <View
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:id="@+id/PinView3Full"
                        android:background="@drawable/CircleFull"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true"
                        tools:visibility="gone" />
                </RelativeLayout>
                <RelativeLayout
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_gravity="center"
                    android:layout_centerHorizontal="true">
                    <View
                        android:layout_width="60dp"
                        android:layout_height="60dp"
                        android:id="@+id/PinView4Empty"
                        android:background="@drawable/CircleEmpty"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true" />
                    <View
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:id="@+id/PinView4Full"
                        android:background="@drawable/CircleFull"
                        android:textAlignment="center"
                        android:layout_gravity="center"
                        android:layout_centerInParent="true"
                        tools:visibility="gone" />
                </RelativeLayout>
            </TableRow>
        </TableLayout>
        <LinearLayout
            android:layout_gravity="bottom"
            android:textAlignment="textEnd"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1">
            <GridLayout
                android:columnCount="3"
                android:rowCount="4"
                android:layout_height="wrap_content"
                android:layout_width="match_parent"
                android:layout_gravity="bottom"
                android:id="@+id/buttonGrid">
                <Button
                    android:id="@+id/button1"
                    android:text="1"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button2"
                    android:text="2"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button3"
                    android:text="3"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button4"
                    android:text="4"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button5"
                    android:text="5"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button6"
                    android:text="6"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button7"
                    android:text="7"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button8"
                    android:text="8"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button9"
                    android:text="9"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/buttonDel"
                    android:text="DEL"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/button0"
                    android:text="0"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
                <Button
                    android:id="@+id/buttonOk"
                    android:text="OK"
                    android:layout_width="wrap_content"
                    android:layout_height="80dp"
                    style="@style/NumPadButtonStyle" />
            </GridLayout>
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

Layout Inflater eka ei use wenne kiyalai denaganna one..xml eka objects walata convert kirimakne ? pehedili kirimak thama beluwe macho

 

[asiridol]

Layout Inflater eka ei use wenne kiyalai denaganna one..xml eka objects walata convert kirimakne ? pehedili kirimak thama beluwe macho

ehema traditional java walin hithanna epa machan.. MVC pattern ekata hithapan.. Model eka data side eka. View eka thamai layout xml files. Controller eka activity eka hari mokak hari e view eka control karana eka.. umbata view component ekakata reference one unama resource id eken ganna one.