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POWhy is Android lint showing "nested weights are bad for performance" when none are nested?
 

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  1. POWhy is Android lint showing "nested weights are bad for performance" when none are nested?
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    <p>The layout_weight attribute in the last TextView in this layout is being highlighted by lint as causing bad performance. I suspect the name of the lint warning is erroneous as there are no nested weights. There are several stretching views, and I suspect what it means is dependent weighted views.</p> <p>What's the solution, to build this layout, and avoid this lint warning, and improve performance?</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="center_horizontal" android:background="@drawable/background_gradient" &gt; &lt;ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/image4" android:layout_margin="6dp" android:contentDescription="@string/PLACEHOLDER_TEXT" /&gt; &lt;LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="horizontal" &gt; &lt;Button style="@style/dashboard_button" android:id="@+id/home_management" android:text="@string/ICON_MANAGEMENT" /&gt; &lt;Button style="@style/dashboard_button" android:id="@+id/home_calculators" android:text="@string/ICON_CALCULATORS" /&gt; &lt;/LinearLayout&gt; &lt;LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="horizontal" &gt; &lt;Button style="@style/dashboard_button" android:id="@+id/home_guidelines" android:text="@string/ICON_GUIDELINES" /&gt; &lt;Button style="@style/dashboard_button" android:id="@+id/home_faq" android:text="@string/ICON_FAQ" /&gt; &lt;/LinearLayout&gt; &lt;LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="horizontal" &gt; &lt;Button style="@style/dashboard_button" android:id="@+id/home_refs" android:text="@string/ICON_REFERENCES" /&gt; &lt;Button style="@style/dashboard_button" android:text="" android:visibility="invisible" /&gt; &lt;/LinearLayout&gt; &lt;LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:gravity="center_vertical" android:layout_margin="6dp" &gt; &lt;TextView android:text="@string/HOMEPAGE_CONTENT" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center_horizontal" android:textStyle="bold" android:textColor="#FFFFFF" /&gt; &lt;View android:layout_width="8dp" android:layout_height="1dp" /&gt; &lt;ImageView android:id="@+id/home_logo" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:src="@drawable/image7" android:contentDescription="@string/PLACEHOLDER_TEXT" /&gt; &lt;/LinearLayout&gt; &lt;Button android:id="@+id/home_web_site" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/HOMEPAGE_FOOTER" android:paddingLeft="4dp" android:paddingRight="4dp" android:paddingTop="8dp" android:paddingBottom="8dp" android:textSize="12sp" android:background="@drawable/button_red" android:layout_margin="6dp" android:textColor="#FFFFFF" /&gt; &lt;/LinearLayout&gt; </code></pre>
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    1. COSee also: http://stackoverflow.com/questions/9430764/why-are-nested-weights-bad-for-performance-alternatives
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      1. USRafal Roszak
 

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