为什么会出现这些语法错误？

Question

I have the following code

        image1.setOnClickListener(new View.OnClickListener() {

        int randInt = new Random().nextDouble() < 0.5 ? 1 : 2;

        if (randInt.equals(1)) {
            public void onClick(View view) {
                if (isFirstImage) {       
                    applyRotation(0, 90);
                    applyRotation(0, 90);
                    isFirstImage = !isFirstImage;

                } else {    
                    applyRotation(0, -90);
                    applyRotation(0, -90);
                    isFirstImage = !isFirstImage;
                }
            }
        } else if (randInt.equals(2)) {
            public void onClick(View view) {
                if (isFirstImage) {       
                    applyRotation(0, 90);
                    applyRotation(0, 90);
                    applyRotation(0, 90);

                    isFirstImage = !isFirstImage;

                } else {    
                    applyRotation(0, -90);
                    applyRotation(0, -90);
                    applyRotation(0, -90);
                    isFirstImage = !isFirstImage;
                }
            }
        }

    }); 

I have a "Syntax error, insert ";" to complete Statement" on the line where I declare my integer, when I clearly do have a ";" there. I have a few "Syntax error on token "(",:expected" and "Syntax error on token ")",;expected" where I have "public void onClick(View view) {" I have a "Syntax error, insert "}" to complete Statement" but I looked everywhere and it seems I have closed all my statements.

I think Eclipse is giving me false errors, and I tried Project > Clean, but that didn't solve it. Please help, thanks!

Answer 1

I think the missing ";" error is spurious. Your real problem is how you are trying to declare the onClick listeners. The if blocks cannot contain method declarations like that. Try the following:

image1.setOnClickListener(new View.OnClickListener() {

    int randInt = new Random().nextDouble() < 0.5 ? 1 : 2;

    @Override
    public void onClick(View view) {
        if (randInt == 1) {
            if (isFirstImage) {       
                applyRotation(0, 90);
                applyRotation(0, 90);
            } else {    
                applyRotation(0, -90);
                applyRotation(0, -90);
            }
        } else if (randInt == 2) {
            if (isFirstImage) {       
                applyRotation(0, 90);
                applyRotation(0, 90);
                applyRotation(0, 90);
            } else {    
                applyRotation(0, -90);
                applyRotation(0, -90);
                applyRotation(0, -90);
            }
        }
        isFirstImage = !isFirstImage;
    }
});

This will fix randInt at the time the OnClickListener is attached to image1 . If you want a random rotation each time image1 is clicked, move the declaration of randInt to be the first statement of the onClick method itself.