Eclipse hint: This tag and its children can replaced by one <TextView/> and a compound drawable

Source: Internet
Author: User

Today, while learning about Android development, I wrote a code like this:

<?XML version= "1.0" encoding= "Utf-8"?><LinearLayoutxmlns:android= "Http://"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical"android:gravity= "Center"    >    <ImageViewAndroid:id= "@+id/imageview2"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"        />    <TextViewAndroid:id= "@+id/textview2"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"android:gravity= "Center"        /></LinearLayout>

Eclipse then reports a hint: this tag and its children can replaced by one <TextView/> and a compound drawable

Finally, we looked at the information found:

Sometimes we may use the Image+textview combination, but in fact the image is not necessary, TextView provides a property to set the image

such as: Through the Setcompounddrawable method, or directly in the XML using Android:drawableleft., Android:drawableright, and other properties specified!


    • Set android:baselinealigned= "False" on the This element for better performance
      • If LinearLayout is used for nested layout space calculations, its Android:baselinealigned property should be set to false to speed up the layout calculation
      • Android:baselinealigned= "false"
    • This linearlayout layout or its relativelayout the parent is useless;
      • Extra LinearLayout or Relativelayout.
      • Delete and then
    • Use a layout_height of 0dip instead of wrap_content for better performance
      • When you set the weight property for a control in a linearlayout layout, the component fills the remaining space by default
      • Remove the weight attribute or modify the wrap_content to 0DP
    • Buttons in button bars should is borderless
      • Unknown cause
      • Style= "? Android:attr/buttonbarbuttonstyle"

Data excerpt: Http://

Eclipse Tip: This tag and its children can replaced by one <TextView/> and a compound drawable

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