Question

我是一名初学者，对编码知之甚少。我已经在我的viewfippler画廊中实现了一个保存按钮，但我在这一行上遇到两个错误“Bitmap bitmap = getBitmapFromImageView（ImageView imageView）;”在saveimage（）方法中。编译器说有预期的“）”，并且在上面指定的行上有一个非法的表达式开始。相关代码如下。

ViewFlipper.java

    public class ViewFlipperActivity extends Activity {
        @Override
        public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        findViewById(R.id.btnSave).setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                saveimage();
            }
        });

       ........

}
    public Bitmap getBitmapFromImageView(ImageView imageView) {
        int viewWidth = imageView.getWidth();
        int viewHeight = imageView.getHeight();
        Bitmap bitmap = Bitmap.createBitmap(viewWidth, viewHeight, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        imageView.layout(0, 0, viewWidth, viewHeight);
        imageView.draw(canvas);
        return bitmap;
    }


    public static void saveimage(){


        Bitmap bitmap = getBitmapFromImageView(ImageView imageView);

        File f =new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/HD GOSPEL LOCKSCREENS");
        if(!f.exists())
        {
            f.mkdirs();
        }
        f = new File(f.getAbsolutePath(),
                String.valueOf(System.currentTimeMillis()) +"hdgospelLockScreen.jpg");
        if(!f.exists())
        {
            try {
                f.createNewFile();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        try {
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, new FileOutputStream(f));
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
   .......

}

Answer 1

您的语法不正确。将此行：Bitmap bitmap = getBitmapFromImageView(ImageView imageView);更改为Bitmap bitmap = getBitmapFromImageView(imageView);，其中imageView是ImageView对象。

编辑：另外，你的静态函数saveImage应该包含ImageView对象：

public static void saveImage(ImageView imageView) {

如何正确保存图像到SD卡？

1 个答案: