Android: allinea il centro LinearLayout per tutte le dimensioni dello schermo

Desidero progettare un layout per la schermata di accesso, ho provato i seguenti codici. Usando alcuni valori hardcoded ho ottenuto il mio centro di layout del colore verde centrale per alcune dimensioni dello schermo. So che l'uso di valori codificati non funziona su schermi di dimensioni diverse. Ho provato numerosi oggetti su SO. Si prega di fornire me il miglior modo enter image description here Android: allinea il centro LinearLayout per tutte le dimensioni dello schermo

<?xml version="1.0" encoding="utf-8"?> 

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:background="@drawable/background" > 

<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" > 

    <RelativeLayout 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:id="@+id/register_header" 
     android:layout_width="fill_parent" 
     android:layout_height="50dp" 
     android:orientation="horizontal" > 

     <ImageView 
      android:id="@+id/title_image" 
      android:layout_width="wrap_content" 
      android:layout_height="40dp" 
      android:layout_centerHorizontal="true" 
      android:layout_centerVertical="true" 
      android:layout_marginBottom="5dp" 
      android:layout_marginTop="5dp" 
      android:gravity="center" 
      android:src="@drawable/logo_blue" /> 


    </RelativeLayout> 

    <LinearLayout 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:layout_marginLeft="150dp" 
     android:layout_marginRight="150dp" 
     android:layout_marginTop="50dp" 
     android:layout_marginBottom="50dp" 
     android:orientation="vertical" > 

     <LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/UserInfo" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/WelcomeInfo" 
      android:gravity="center_vertical" 
      android:orientation="horizontal" > 

      <TextView 
       android:id="@+id/user" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="User Name" 
       android:textColor="#000000" 
       android:textSize="10pt" 
       android:textStyle="bold" /> 

      <EditText 
       android:id="@+id/username" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:hint="Enter username" 
       android:singleLine="true" 
       android:textColor="#000000" > 
      </EditText> 
     </LinearLayout> 

     <LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/PassInfo" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@id/UserInfo" 
      android:orientation="horizontal" > 

      <TextView 
       android:id="@+id/pwd" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="Password" 
       android:textColor="#000000" 
       android:textSize="10pt" 
       android:textStyle="bold" /> 

      <EditText 
       android:id="@+id/password" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:hint="Enterpassword" 
       android:singleLine="true" 
       android:textColor="#000000" /> 
     </LinearLayout> 

     <LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/StoreNumInfo" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/WelcomeInfo" 
      android:gravity="center_vertical" 
      android:orientation="horizontal" > 

      <TextView 
       android:id="@+id/num" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="Store Number" 
       android:textColor="#000000" 
       android:textSize="10pt" 
       android:textStyle="bold" /> 

      <EditText 
       android:id="@+id/store_num" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:hint="Enter the Store number" 
       android:imeOptions="actionDone" 
        android:password="true" 

       android:textColor="#000000" > 
      </EditText> 
     </LinearLayout> 

     <LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/Options" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@id/PassInfo" 
      android:orientation="horizontal" > 

      <CheckBox 
       android:id="@+id/signed_in" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="Stay Signed-in" 
       android:textColor="#000000" /> 


      <Button 
       android:id="@+id/login" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="Login" 
       android:textSize="28dp" 
       android:textStyle="bold" /> 
     </LinearLayout> 


    </LinearLayout> 
</LinearLayout> </ScrollView>

fonte

2013-01-04 Sridhar

Voglio solo l'area verde al centro – Sridhar

vuoi il layout verde al centro? – kongkea

sì, voglio quel layout verde al centro – Sridhar

Usa la tua copertina del layout verde come RelativeLayout. e quindi definire il tuo greenLayout in questo modo. android:layout_centerHorizontal="true" android:layout_centerVertical="true"

Guardate il mio xml può centrare tutto schermo

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:orientation="vertical" > 

<LinearLayout 
    android:id="@+id/lin_all" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_centerHorizontal="true" 
    android:layout_centerVertical="true" 
    android:orientation="vertical" > 
</LinearLayout> 

</RelativeLayout>

fonte

2013-01-04 03:57:21 kongkea

Ho ricevuto questo avviso msg "Questo layout LinearLayout o il suo genitore RelativeLayout è inutile" – Sridhar

Cuz il tuo layout è nella Linear della scrollview e non so che possa o non possa centro di Scrollview lineare. ma questo è quello che ho fatto con Scrollview. http://pastie.org/5619676 – kongkea

Funzionante bene su grande schermo, lo sto testando in piccolo schermo. – Sridhar

Prova questo:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:gravity="center" 
     android:orientation="vertical" > 

// put all your xml code here 


    </LinearLayout>

provare il codice modificato:

NUOVO EDIT:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:gravity="center" 
    android:orientation="vertical" 
    android:weightSum="1"> 


    <RelativeLayout 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:id="@+id/register_header" 
     android:layout_width="fill_parent" 
     android:layout_height="0dp" 
     android:layout_weight="0.1" 
     android:orientation="horizontal" > 

     <ImageView 
      android:id="@+id/title_image" 
      android:layout_width="wrap_content" 
      android:layout_height="0dp" 
      android:layout_centerHorizontal="true" 
      android:layout_centerVertical="true" 
      android:layout_marginBottom="5dp" 
      android:layout_marginTop="5dp" 
      android:gravity="center" 
      android:src="@drawable/logo_blue" /> 


    </RelativeLayout> 

    <LinearLayout 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="fill_parent" 
     android:layout_height="0dp" 
     android:layout_marginLeft="10dp" 
     android:layout_marginRight="10dp" 
     android:layout_weight="0.9" 
     android:gravity="center" 
     android:orientation="vertical" > 

     <LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/UserInfo" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/WelcomeInfo" 
      android:gravity="center_vertical" 
      android:orientation="horizontal" > 

      <TextView 
       android:id="@+id/user" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="User Name" 
       android:textColor="#000000" 
       android:textSize="10pt" 
       android:textStyle="bold" /> 

      <EditText 
       android:id="@+id/username" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:hint="Enter username" 
       android:singleLine="true" 
       android:textColor="#000000" > 
      </EditText> 
     </LinearLayout> 

     <LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/PassInfo" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@id/UserInfo" 
      android:orientation="horizontal" > 

      <TextView 
       android:id="@+id/pwd" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="Password" 
       android:textColor="#000000" 
       android:textSize="10pt" 
       android:textStyle="bold" /> 

      <EditText 
       android:id="@+id/password" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:hint="Enterpassword" 
       android:singleLine="true" 
       android:textColor="#000000" /> 
     </LinearLayout> 

     <LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/StoreNumInfo" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/WelcomeInfo" 
      android:gravity="center_vertical" 
      android:orientation="horizontal" > 

      <TextView 
       android:id="@+id/num" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="Store Number" 
       android:textColor="#000000" 
       android:textSize="10pt" 
       android:textStyle="bold" /> 

      <EditText 
       android:id="@+id/store_num" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:hint="Enter the Store number" 
       android:imeOptions="actionDone" 
        android:password="true" 

       android:textColor="#000000" > 
      </EditText> 
     </LinearLayout> 

     <LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/Options" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@id/PassInfo" 
      android:orientation="horizontal" > 

      <CheckBox 
       android:id="@+id/signed_in" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="Stay Signed-in" 
       android:textColor="#000000" /> 


      <Button 
       android:id="@+id/login" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:layout_weight="1" 
       android:text="Login" 
       android:textSize="28dp" 
       android:textStyle="bold" /> 
     </LinearLayout> 


    </LinearLayout> 
</LinearLayout>

fonte

2013-01-04 04:16:11

Non funziona .. – Sridhar

quale output si ottiene dopo l'esecuzione di questo.Puoi postare screenshot –

prova questo ** EDIT ** code e fammi sapere –

di lavorare in diverse dimensioni dello schermo vi consiglio di creare diversi file XML in base a dimensioni dello schermo ........ si può guardare qui http://developer.android.com/guide/practices/screens_support.html ...

fonte

2013-01-04 05:10:57

Prova questo codice XML, risolverà il tuo problema.

<?xml version="1.0" encoding="utf-8"?> 
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" > 

    <LinearLayout 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_gravity="center_vertical" 
     android:orientation="vertical" > 

     <RelativeLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/register_header" 
      android:layout_width="fill_parent" 
      android:layout_height="50dp" 
      android:orientation="horizontal" > 

      <ImageView 
       android:id="@+id/title_image" 
       android:layout_width="wrap_content" 
       android:layout_height="40dp" 
       android:layout_centerHorizontal="true" 
       android:layout_centerVertical="true" 
       android:layout_marginBottom="5dp" 
       android:layout_marginTop="5dp" 
       android:gravity="center" 
       android:src="@drawable/ic_launcher" /> 
     </RelativeLayout> 

     <LinearLayout 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:orientation="vertical" > 

      <LinearLayout 
       xmlns:android="http://schemas.android.com/apk/res/android" 
       android:id="@+id/UserInfo" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:orientation="horizontal" > 

       <TextView 
        android:id="@+id/user" 
        android:layout_width="match_parent" 
        android:layout_height="fill_parent" 
        android:layout_weight="1" 
        android:text="User Name" 
        android:textColor="#000000" 
        android:textSize="10pt" 
        android:textStyle="bold" /> 

       <EditText 
        android:id="@+id/username" 
        android:layout_width="match_parent" 
        android:layout_height="fill_parent" 
        android:layout_weight="1" 
        android:hint="Enter username" 
        android:singleLine="true" 
        android:textColor="#000000" > 
       </EditText> 
      </LinearLayout> 

      <LinearLayout 
       xmlns:android="http://schemas.android.com/apk/res/android" 
       android:id="@+id/PassInfo" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_below="@id/UserInfo" 
       android:orientation="horizontal" > 

       <TextView 
        android:id="@+id/pwd" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" 
        android:layout_weight="1" 
        android:text="Password" 
        android:textColor="#000000" 
        android:textSize="10pt" 
        android:textStyle="bold" /> 

       <EditText 
        android:id="@+id/password" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" 
        android:layout_weight="1" 
        android:hint="Enterpassword" 
        android:singleLine="true" 
        android:textColor="#000000" /> 
      </LinearLayout> 

      <LinearLayout 
       xmlns:android="http://schemas.android.com/apk/res/android" 
       android:id="@+id/StoreNumInfo" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_below="@+id/WelcomeInfo" 
       android:gravity="center_vertical" 
       android:orientation="horizontal" > 

       <TextView 
        android:id="@+id/num" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" 
        android:layout_weight="1" 
        android:text="Store Number" 
        android:textColor="#000000" 
        android:textSize="10pt" 
        android:textStyle="bold" /> 

       <EditText 
        android:id="@+id/store_num" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" 
        android:layout_weight="1" 
        android:hint="Enter the Store number" 
        android:imeOptions="actionDone" 
        android:password="true" 
        android:textColor="#000000" > 
       </EditText> 
      </LinearLayout> 

      <LinearLayout 
       xmlns:android="http://schemas.android.com/apk/res/android" 
       android:id="@+id/Options" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_below="@id/PassInfo" 
       android:orientation="horizontal" > 

       <CheckBox 
        android:id="@+id/signed_in" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" 
        android:layout_weight="1" 
        android:text="Stay Signed-in" 
        android:textColor="#000000" /> 

       <Button 
        android:id="@+id/login" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" 
        android:layout_weight="1" 
        android:text="Login" 
        android:textSize="28dp" 
        android:textStyle="bold" /> 
      </LinearLayout> 
     </LinearLayout> 
    </LinearLayout> 

</ScrollView>

fonte

2013-01-04 05:26:22

Nel LinearLayout genitore, aggiungere questo

android:orientation="vertical" 
android:gravity="center"

fonte

2016-11-30 06:07:10

Android: allinea il centro LinearLayout per tutte le dimensioni dello schermo

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