如何在 Java 中为 Android 项目制作 Text Bold 的特定部分？ [复制]

Question

如何使文本的某些部分变为粗体？在 String pars 中，我希望文本的这个特定部分以粗体显示“股票市场如何运作？”并且文本的其余部分应该保持正常。

public class second extends AppCompatActivity {
TextView textView;

@Override
protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
textView = (TextView)findViewById(R.id.Text1);
    String pars = "How Stock Market works ?\n" +
            "They are called by the collective names of ‘buyers’ and 
‘sellers’.\n" +
            "\n" +
            "So imagine that there is a ‘tug of war’ situation between the 
‘buyers’ and the ‘sellers’. The one who wins this war will control the 
price.\n" +
            "\n" +
            "Case 1] Buyers control the game:\n" +
            "\n" +
            "For the buyers to control the game, there has to be more 
supply. More supply of shares would mean that sellers are desperate to sell 
 their part and hence this would give the control in the hands of buyers.\n" 
+

            "\n" +
            "This makes the market such an interesting place! After all 
predictability is boring and tedious. ";
    textView.setText(pars);
    textView.setMovementMethod(new ScrollingMovementMethod());
}
}

Answer 1

使用spannable String，如下代码..

  private String string="\"How Stock Market works ?\\n\" +\n" +
        "            \"They are called by the collective names of ‘buyers’ and \n" +
        "‘sellers’.\\n\" +\n" +
        "            \"\\n\" +\n" +
        "            \"So imagine that there is a ‘tug of war’ situation between the \n" +
        "‘buyers’ and the ‘sellers’. The one who wins this war will control the \n" +
        "price.\\n\" +\n" +
        "            \"\\n\" +\n" +
        "            \"Case 1] Buyers control the game:\\n\" +\n" +
        "            \"\\n\" +\n" +
        "            \"For the buyers to control the game, there has to be more \n" +
        "supply. More supply of shares would mean that sellers are desperate to sell \n" +
        " their part and hence this would give the control in the hands of buyers.\\n\" \n" +
        "+\n" +
        "\n" +
        "            \"\\n\" +\n" +
        "            \"This makes the market such an interesting place! After all \n" +
        "predictability is boring and tedious. ";
private SpannableString spannableString=new SpannableString(string);



  spannableString.setSpan(new StyleSpan(Typeface.BOLD), 0, 21, 0);
textView.setText(spannableString);