AndroidUI control series: TextView (text box)

TextView is relatively simple. it cannot be used for editing. it can only be used to display information. TextView is relatively simple. it cannot be used for editing. it can only be used to display information.

Some common XML attributes in the layout file

Android: gravity-used to set the text alignment in the control

Android: layout_gravity-compared with the parent control, it is used to set the control alignment.

Android: text-used to set control text information

Android: layout_width-used to set the width of the control

Android: layout_height-used to set the height of the control

Android: background-used to set the background color of a widget

Android: textColor-used to set the color of text in the control

Android: textSize-used to set the text font size of the control

Android: width and android: height-functions are similar to android: layout_width.

Differences:

Android: layout_width can only be set to fill_parent (fill the whole screen horizontally) or
Wrap_content (size of the horizontal filling control)

Android: width: sets the horizontal size unit of a specific control to pixels.
Example: TextView display

Main. xml layout file

String. xml file

   
       
  
   Hello World, MyTestView!
        
  
   MyTestView
    
 

MyTextView. java file

package org.loulijun.MyTestView;    import android.app.Activity;  import android.os.Bundle;    public class MyTestView extends Activity {      /** Called when the activity is first created. */      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);      }  }

Running result:

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