A brief summary of how to implement TextView font color settings by Android programming _android

The example in this article describes how Android programming implements TextView font color settings. Share to everyone for your reference, specific as follows:

for Settextview (int a) Here's a is the value of the color passed in. For example, the red 0xff0000 refers to 0xff0000 how to directly into the r.color.red is not a way to set the color, only through the article in the third way to get the color value of the resource and then pass in.

Copy Code code as follows:

Tv.settextcolor (This.getresources (). GetColor (r.color.red));

Keywords: android textview color

TextView Font Setting Method:

1, directly through the configuration file settings

2, in the activity class to set up

The first method is simple, for setting the static or initial text color, as follows:

Main.xml

<?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" 
  android:background= "@drawable/white" 
  > 
<textview android:id=  
  "@+id/ Tv01 " 
  android:layout_width=" fill_parent "  
  android:layout_height=" wrap_content "  
  android:text=" @ String/hello " 
  android:autolink=" all " 
  android:textcolor=" @color/red " 
  /> 
</ Linearlayout>

Color.xml

<?xml version= "1.0" encoding= "Utf-8"?> 
<resources> 
  <drawable name= "White" > #FFFFFF </ drawable> 
  <drawable name= "Dark" > #000000 </drawable> 
  <drawable name= "Red" > #FF0000 < /drawable> 
</resources> 
strings.xml
<?xml version= "1.0" encoding= "Utf-8"?> 
< resources> 
 <string name= "Hello" > Address:http://www.jb51.net/</string> 
  <string name= "App_ Name > Cloud Community </string> 
</resources>

The Resources section is divided into 3 parts to make it clear, but you can also just build an XML file in the Res directory, and the file name can be arbitrarily named.

Note two places:

1, main.xml TextView Label:

Copy Code code as follows:

Android:textcolor= "@color/red"

2, in Color.xml:

Copy Code code as follows:

<color name= "Red" > #FF0000 </color>

@color refers to the <color> tag that gets the resource file (the XML file in all res directories)

/red refers to the content under the label whose name value is red, whose value is #ff0000

So here's what we can do:

Copy Code code as follows:

Android:textcolor= "@drawable/red"

@drawable refers to obtaining <drawable> tags in resource files

/red refers to the content under the label to find its name value red

And so on, I believe you will know what to do if it is in the strings.xml.

Let's look at the second way: set in the Activity class

1, the first main.xml into the following, that is, remove android:textcolor= "@color/red":

<?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" 
  android:background= "@drawable/white" 
  > 
<textview android:id=  
  "@+id/ Tv01 " 
  android:layout_width=" fill_parent "  
  android:layout_height=" wrap_content "  
  android:text=" @ String/hello " 
  android:autolink=" all " 
  /> 
</LinearLayout>

2, modify the activity of the OnCreate method, where my activity is study03_01, the original code is as follows:

Package yahaitt.study03_01;  
Import android.app.Activity; 
Import Android.os.Bundle; 
public class Study03_01 extends activity {    @Override public 
  void OnCreate (Bundle savedinstancestate) { 
    Super.oncreate (savedinstancestate); 
    Setcontentview (R.layout.main); 
  } 

The first step: Get the Text control TextView, named TV

Step two: Use the TextView SetTextColor method for text color settings, there are 3 ways to set:

The 1th kind:

Copy Code code as follows:

Tv.settextcolor (Android.graphics.Color.RED);//system self-band color class

The 2nd kind:

Copy Code code as follows:

Tv.settextcolor (0XFFFF00FF);//0xffff00ff is an int type of data

Group A 0x|ff|ff00ff,0x is a token that represents a color integer, FF is a transparency, ff00ff represents a color, note: Here FFFF00FF must be 8 color representations, do not accept ff00ff this 6 color representation.

The 3rd kind:

Copy Code code as follows:

Tv.settextcolor (This.getresources (). GetColor (r.color.red));//set by obtaining a resource file.

Depending on the situation r.color.red can also be r.string.red or r.drawable.red, of course, if necessary in the corresponding configuration file to do the appropriate configuration, such as:

<color name= "Red" > #FF0000 </color>
<drawable name= "Red" > #FF0000 </drawable>
< String name= "Red" > #FF0000 </string>

The detailed code is as follows:

Package yahaitt.study03_01; 
Import android.app.Activity; 
Import android.content.res.Resources; 
Import Android.graphics.Color; 
Import Android.os.Bundle; 
Import Android.widget.TextView; 
public class Study03_01 extends activity {  
  private TextView TV; 
  @Override public 
  void OnCreate (Bundle savedinstancestate) {
    super.oncreate (savedinstancestate); 
    Setcontentview (r.layout.main);  
    TV = (TextView) This.findviewbyid (R.ID.TV01);
    Tv.settextcolor (color.red);
    Tv.settextcolor (0xff000000);
  } 

I hope this article will help you with the Android program.