define width as percentage android

问题描述:

I need help you .I dont know why this code dont run correctly.I want first textview and edittext have 50% space and second textview and edittext have 50% other while it only display a empty layout.

please help me thanks

<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weightSum="1.0"
>
<TextView
android:layout_height="wrap_content"
android:layout_weight="0.10"
android:layout_width="0dip"
android:id="@+id/lytner_card_question_text"
android:layout_alignParentRight="true"
android:gravity="center"
android:textSize="20dp"
/>
<ScrollView android:id="@+id/myparentScrollview"
android:layout_height="100dp"
android:layout_weight="0.40"
android:layout_width="0dip"
android:layout_toLeftOf="@+id/lytner_card_question_text"
>
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/lytner_card_question_etext"
android:minHeight="100dp"
/>
</ScrollView>
<TextView
android:layout_height="wrap_content"
android:layout_weight="0.10"
android:layout_width="0dip"
android:id="@+id/lytner_card_answer_text"
android:layout_toLeftOf="@+id/myparentScrollview"
android:gravity="center"
android:textSize="20dp"
/>
<ScrollView android:id="@+id/myparentScrollview1"
android:layout_height="100dp"
android:layout_weight="0.40"
android:layout_width="0dip"
android:layout_toLeftOf="@+id/lytner_card_answer_text"
>
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/lytner_card_answer_etext"
android:minHeight="100dp"
/>
</ScrollView>
</RelativeLayout>

网友答案:

There is no point in adding weight sum to a Relative Layout. It only works for Linear Layout. Change your Relative Layout to a Linear Layout and then try again.

网友答案:

The following code gives you two LinearLayouts as containers, each with height half of the screen:

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

    <LinearLayout 
        android:id="@+id/container1"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"></LinearLayout>

    <LinearLayout
        android:id="@+id/container2"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1">
    </LinearLayout>

</LinearLayout>

网友答案:

In Relative layout weight does not work , change your layout to linear then try weight.

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define width as percentage android