我是一个android开发新手，
我想提供一个号码setText，我面临这个问题并尝试了很多方法来解决它。
Code is:
public class GameActivity extends Activity implements View.OnClickListener{
int correctAnswer;
Button buttonObjectChoice1;
Button buttonObjectChoice2;
Button buttonObjectChoice3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//here we initialize all our varibles
int partA = 9;
int partB = 2;
correctAnswer = partA * partB;
int wrongAnswer1 = correctAnswer - 1;
int wrongAnswer2 = correctAnswer + 1;
TextView textObjectPartA = (TextView)findViewById(R.id.textPartA);
TextView textObjectPartB = (TextView)findViewById(R.id.textPartB);
buttonObjectChoice1 = (Button)findViewById(R.id.buttonChoice1);
buttonObjectChoice2 = (Button)findViewById(R.id.buttonChoice2);
buttonObjectChoice3 = (Button)findViewById(R.id.buttonChoice3);
textObjectPartA.setText("" + partA);
textObjectPartB.setText("" + partB);
buttonObjectChoice1.setText("" + correctAnswer);
buttonObjectChoice2.setText("" + wrongAnswer1);
buttonObjectChoice3.setText("" + wrongAnswer2);
buttonObjectChoice1.setOnClickListener(this);
buttonObjectChoice2.setOnClickListener(this);
buttonObjectChoice3.setOnClickListener(this);
最后 8 行到最后 4 行有错误。
解决您问题的简单方法是：
textObjectPartA.setText(String.valueOf(partA));
textObjectPartB.setText(String.valueOf(partB));
buttonObjectChoice1.setText(String.valueOf(correctAnswer));
buttonObjectChoice2.setText(String.valueOf(wrongAnswer1));
buttonObjectChoice3.setText(String.valueOf(wrongAnswer2));
android studio 建议你的是，如果你想在文本视图中附加一些东西，那么你必须使用占位符。
使用占位符的示例如下：
文件：strings.xml
...
<string name="part_a">part a value = %1$s.</string>
...
文件：activity_main.xml
...
<TextView
android:id="@+id/R.id.textPartA"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/part_a" />
...
文件名：GameActivity.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//here we initialize all our varibles
int partA = 9;
int partB = 2;
correctAnswer = partA * partB;
int wrongAnswer1 = correctAnswer - 1;
int wrongAnswer2 = correctAnswer + 1;
TextView textObjectPartA = (TextView)findViewById(R.id.textPartA);
TextView textObjectPartB = (TextView)findViewById(R.id.textPartB);
buttonObjectChoice1 = (Button)findViewById(R.id.buttonChoice1);
buttonObjectChoice2 = (Button)findViewById(R.id.buttonChoice2);
buttonObjectChoice3 = (Button)findViewById(R.id.buttonChoice3);
Resources res = getResources();
String partA_text = String.format(res.getString(R.string.part_a), partA);
textObjectPartA.setText(partA_text );
...
我希望这能消除你的疑虑。格式化字符串：android 开发者 http://developer.android.com/guide/topics/resources/string-resource.html
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