android 开发技巧(8)--格式化 TextView 的文本

android 对TextView文本进行格式化，一般有两种方法，第一种就是使用Html.fromHtml()，另一种是通过SpannableString

//格式化 TextView 的文本
public class Hack10Activity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_hack10);

        final TextView textView1 = (TextView) findViewById(R.id.my_text_view_html);
        textView1.setText(Html.fromHtml(getString(R.string.text1)));
        textView1.setMovementMethod(LinkMovementMethod.getInstance());

        final Spannable text2 = new SpannableString(
                getString(R.string.text2));
        text2.setSpan(new BackgroundColorSpan(Color.RED), 1, 4, 0);
        text2.setSpan(new ForegroundColorSpan(Color.BLUE), 5, 9, 0);

        ((TextView) findViewById(R.id.my_text_view_spannable))
                .setText(text2);
    }

}

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" >

    <TextView  android:id="@+id/my_text_view_html" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" />

    <TextView  android:id="@+id/my_text_view_spannable" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/my_text_view_html" android:layout_below="@+id/my_text_view_html" />

</RelativeLayout>

 <string name="text1"><![CDATA[Visit <a href=\"http://www.baidu.com/\">百度</a>]]></string>
    <string name="text2">Hello World, HomeActivity!</string>