Android UI Control Series: TextView (text box)

TextView is relatively simple and can not be used for editing, only to display information

Some common XML attributes in the layout file

Android:gravity-used to set the alignment of text within a control

Android:layout_gravity-is used to set the alignment of a control relative to the parent control

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 the control

android:textcolor-to set the color of text within a 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

Difference:

Android:layout_width can only set fill_parent (fill the entire screen horizontally) or
Wrap_content (the size of the control itself is filled horizontally)

Android:width Setting the horizontal size unit of a specific control is pixel
Example: TextView display

Main.xml Layout file

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout  xmlns:android= "http://schemas.android.com/apk/ Res/android "      android:orientation=" vertical "      android:layout_width=" fill_parent "      android:layout_ height= "Fill_parent"      >  <textview      android:layout_width= "fill_parent"      android:layout_ height= "Wrap_content"      android:text= "@string/hello"      />  </LinearLayout>

String.xml file

<?xml version= "1.0" encoding= "Utf-8"?>  <resources>      <string name= "Hello" >hello world, mytestview!</string>      <string name= "app_name" >MyTestView</string>  </resources>

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);      }  }

Operation Result:

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