Getting started with Android: textview

I. Set the color of Some fonts

Pass

Spannablestringbuilder style = new spannablestringbuilder (charsequence CS );

Style. setspan (New foregroundcolorspan (color), begin, end, spannable. span_exclusive_exclusive );

TV. settext (style );

Settings. Due to the complexity of this method, I implemented a helper class to quickly implement the color of Some fonts;

final class TextViewUtil{public static CharSequence setTextColor(CharSequence str,int begin,int end,int color){SpannableStringBuilder style = new SpannableStringBuilder(str);style.setSpan(new ForegroundColorSpan(color), begin, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);return style;} }

Test code:

package org.xiazdong;import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.text.Spannable;import android.text.SpannableStringBuilder;import android.text.style.ForegroundColorSpan;import android.widget.TextView;public class MainActivity extends Activity {private TextView tv;@Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        tv = (TextView)findViewById(R.id.tv);        String str = "hello,xiazdong";        CharSequence cq = TextViewUtil.setTextColor(str, 0, 2, Color.RED);        cq = TextViewUtil.setTextColor(cq, 2, 5, Color.GREEN);        tv.setText(cq);    }}

Effect:

Ii. Achieve the running horse light effect (rolling subtitles)

Set the following in <textview> of the main. xml layout file:

android:singleLine="true"       android:focusable="true"       android:ellipsize="marquee"       android:marqueeRepeatLimit="marquee_forever"       android:focusableInTouchMode="true"

Effect:

3. Implement hyperchain

Set <textview> as follows:

Android: autolink = "all", if the string in textview is "Hello, xiazdong's blog: http://blog.csdn.net/xiazdong, phone: 12345678901"

The system automatically recognizes http://blog.csdn.net/xiazdongand 12345678901;