Cannot resolve symbol 'context'

Question

I'm trying to write an Android app which automatically uploads a picture to a server, but I am stuck on just one line of code: ``` File f = File(context.getCacheDir(), "filename"); ``` The error I get is This puzzles me because I see so many examples on the web of people using `context.getCacheDir()` just fine, whereas I get the error message. It's probably something wrong with my IDE settings. I am using IntelliJ IDE. Here's is the context of the context problem: ``` @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if( requestCode == CAMERA_PIC_REQUEST) { Bitmap thumbnail = (Bitmap) data.getExtras().get("data"); ImageView image =(ImageView) findViewById(R.id.PhotoCaptured); image.setImageBitmap(thumbnail); //create a file to write bitmap data File f = File(context.getCacheDir(), "filename"); try { f.createNewFile(); } catch (IOException e) { e.printStackTrace(); } ```

Accepted Answer

You need to do some basic Java programming tutorials. Java is totally different to JavaScript.

Here, you use `context` as a variable but you have neither declared it, or initialised it, hence the error.

You could define it (and initialise at the same time)

```
 Context context = this;
```

since `this` refers to the current object instance of a class and `Activity` is a `Context`, or more precisely, it `extends` `Context`.

Alternatively, you could just use `this`.

```
File f = File(UploadToServer.this.getCacheDir(), "filename");
```

Cannot resolve symbol 'context'

Solution

Problem