Android Studio中Java中的冗余字符串格式

Question

I tried to update a TextView after button is clicked. I used the Strings.xml to help me out and named it as "justice". Unfortunately when I click the button, apparently that all text in "justice" is added twice. One with bold fonts and another without bold fonts.

I tried added "%s", but it doesn't work either. I used Android Studio 3.3.0.

public void onCreate(Bundle savedInstanceState) {

   super.onCreate(savedInstanceState);
   setContentView(R.layout.main);

   tView = (TextView) findViewById(R.id.textView1);
   clickhere = (Button) findViewById(R.id.button1);

   clickhere.setOnClickListener(new View.OnClickListener() {
       public void onClick(View v) {
          String display = String.format(getString(R.string.justice, "%s"));
          tView.setText(display);
       }
   });
}

I expect to see only one copy of "justice" when I click the button. Does this bug comes from Android Studio or something is wrong with my code??? Someone, help me please. Thank you.

Answer 1

您应该可以这样设置文本：

tView.setText(getString(R.string.justice));

Answer 2

public void onCreate(Bundle savedInstanceState) {

   super.onCreate(savedInstanceState);
   setContentView(R.layout.main);

   // clean up code :)
   tView = findViewById(R.id.textView1);
   clickhere = findViewById(R.id.button1);

   clickhere.setOnClickListener(new View.OnClickListener() {
       public void onClick(View v) {
          tView.setText(R.String.justice);
       }
   });
}

Answer 3

First of all, check your strings.xml and make sure you do not have duplicate strings in justice. If it does not, try the following

 public void onCreate(Bundle savedInstanceState) {

   super.onCreate(savedInstanceState);
   setContentView(R.layout.main);

   tView = (TextView) findViewById(R.id.textView1);
   clickhere = (Button) findViewById(R.id.button1);

   clickhere.setOnClickListener(new View.OnClickListener() {
       public void onClick(View v) {
          String display = getString(R.string.justice);
          tView.setText(display);
       }
   });
}

By the way, to get the reference to view objects, you do not need explicit casting. The following is also fine.

tView = findViewById(R.id.textView1);
clickhere = findViewById(R.id.button1);