CharacterStyle的简单使用

 1 public class MainActivity extends Activity {
 2 
 3     Button mbutton;
 4     TextView mtextView;
 5 
 6     @Override
 7     protected void onCreate(Bundle savedInstanceState) {
 8         super.onCreate(savedInstanceState);
 9         setContentView(R.layout.activity_main);
10 
11         mtextView = (TextView) findViewById(R.id.mtextView);
12         mbutton = (Button) findViewById(R.id.mbutton);
13 
14         mbutton.setOnClickListener(new OnClickListener() {
15 
16             @Override
17             public void onClick(View v) {
18 
19                 SpannableStringBuilder ssBuilder = new SpannableStringBuilder(
20                         mtextView.getText().toString());
21                 CharacterStyle cStyle = new ForegroundColorSpan(Color.BLUE);
22                 CharacterStyle cStyle1 = new BackgroundColorSpan(Color.GRAY);
23                 CharacterStyle cStyle2 = new UnderlineSpan();
24                 CharacterStyle cStyle3 = new ClickableSpan() {
25 
26                     @Override
27                     public void onClick(View widget) {
28                         Toast.makeText(getApplicationContext(), "hello",
29                                 Toast.LENGTH_LONG).show();
30 
31                     }
32                 };
33 
34                 ssBuilder.setSpan(cStyle, 0, mtextView.getText().length(),
35                         Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
36                 ssBuilder.setSpan(cStyle1, 0, mtextView.getText().length(),
37                         Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
38                 ssBuilder.setSpan(cStyle2, 0, mtextView.getText().length(),
39                         Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
40                 ssBuilder.setSpan(cStyle3, 0, mtextView.getText().length() - 5,
41                         Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
42 
43                 mtextView.setText(ssBuilder);
44                 mtextView.setMovementMethod(LinkMovementMethod.getInstance());
45             }
46         });
47 
48     }
49 
50 }