Html.fromHtml(<font color='red' size='24'>你好</font>" )

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:gravity="center"
android:orientation="vertical"
tools:context=".MainActivity">
<TextView
android:id="@+id/html_text"
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/html_text2"
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/html_text3"
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView) findViewById(R.id.html_text);
textView2 = (TextView) findViewById(R.id.html_text2);
textView3 = (TextView) findViewById(R.id.html_text3);
names = new ArrayList<>();
counts = new ArrayList<>();
message = new ArrayList<>();
names.add("奥特曼");
names.add("白雪公主与七个小矮人");
names.add("沃德天·沃纳陌帅·帅德·布耀布耀德 ");
counts.add(1);
counts.add(123);
counts.add(9090909);
for (int i = 0; i < 3; i++) {
message.add("<font color='red' size='20'>"+names.get(i)+"</font>"+"向您发来"+
"<font color='blue' size='30'>"+counts.get(i)+"</font>"+"条信息");
}
textView.setText(Html.fromHtml(message.get(0)));
textView2.setText(Html.fromHtml(message.get(1)));
textView3.setText(Html.fromHtml(message.get(2)));
}