初学Android之TextView随笔

TextView字体改变颜色用法

 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_text_view);
        
        
        TextView tv = (TextView)findViewById(R.id.tv);
String str="怎么改变文字呢怎么改变文字呢怎么改变文字呢怎么改变文字呢怎么改变文字呢";
        SpannableStringBuilder style = new SpannableStringBuilder(str);
        style.setSpan(new ForegroundColorSpan(Color.RED), 0, 10, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        style.setSpan(new ForegroundColorSpan(Color.GREEN), 10, 15, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        style.setSpan(new ForegroundColorSpan(Color.BLUE), 15, 20, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        tv.setText(style);
 }

如下图: