Method in Main program doesn't work when moved to a class

Question

Beginner android question: I have a method in a Main program that works just fine:

 setRadioButtons(answer, value);

... void setRadioButtons (int answer, int value) {
    if (answer == 1)
        ((RadioButton) findViewById(R.id.C1Button)).setChecked(true);
    else if (answer == 2) ....

However this should really be in a class. When I move it to a class it fails:

Context context= getApplicationContext();
myQ1.setRadioButtons(answer, value, context);

 ...    public void setRadioButtons(int answer, int value, int context) {
        setContentView(context);
        if (answer == 1)
          ((RadioButton) findViewById(R.id.C1Button)).setChecked(true);

The method call in the Main program shows context underlined in red with the warning:

Wrong 3rd argument type. Found: 'android.content.Context', required: 'int'

This must have something to do with context but I really can't figure it out.

Answer 1

public void setRadioButtons(int answer, int value, int context)

期望参数int, int, int。您提供的是int, int, Context

将方法签名更改为int, int, context，如下所示：

public void setRadioButtons(int answer, int value, Context context)

Answer 2

Context拥有它自己的类。

无论如何，你应该传递给

setContentView

不是上下文，而是布局资源ID，如

R.layout.example

Answer 3

这是因为你已将上下文声明为int。实际上它应该是方法中的Context实例。改变

  public void setRadioButtons(int answer, int value, Context context)