У меня есть загруженный файл, и я хочу использовать его в качестве фонового изображения в моей структуре кадра. Я использую этот код, но он выдает ошибку.
вот строка, где я получаю ошибку:
fm.setBackgroundDrawable(dr);
и вот весь мой код
public class MyAppActivity extends Activity {
private final String PATH = "/data/data/com.myapp/"; //put the downloaded file here
private Drawable imgsrc;
private FrameLayout fm;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
FrameLayout fm = (FrameLayout)findViewById(R.id.framelyt);
//Drawable drw = ImageOperations(this,url,filename)
Button btn = (Button)findViewById(R.id.postbutton);
btn.setOnClickListener(test);
}
View.OnClickListener test = new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
DownloadFromUrl("http://www.mydomain.com/radio/images/", "image.png");
}
};
private void DownloadFromUrl(String imageURL, String fileName) {
// TODO Auto-generated method stub
try {
URL url = new URL(imageURL + fileName); //you can write here any link
File file = new File(PATH + fileName);
if(file.exists())
{
file.delete();
}
long startTime = System.currentTimeMillis();
Log.d("ImageManager", "download begining");
Log.d("ImageManager", "download url:" + url);
Log.d("ImageManager", "downloaded file name:" + fileName);
/* Open a connection to that URL. */
URLConnection ucon = url.openConnection();
/*
* Define InputStreams to read from the URLConnection.
*/
InputStream is = ucon.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);
/*
* Read bytes to the Buffer until there is nothing more to read(-1).
*/
ByteArrayBuffer baf = new ByteArrayBuffer(50);
int current = 0;
while ((current = bis.read()) != -1) {
baf.append((byte) current);
}
/* Convert the Bytes read to a String. */
FileOutputStream fos = new FileOutputStream(file);
fos.write(baf.toByteArray());
Bitmap bMap = BitmapFactory.decodeFile(PATH + fileName);
BitmapDrawable dr = new BitmapDrawable(bMap);
// Drawable d = new BitmapDrawable();
fm.setBackgroundDrawable(dr);
fos.close();
Log.d("ImageManager", "download ready in "
+ ((System.currentTimeMillis() - startTime) / 1000)
+ " sec");
//fm.setBackgroundDrawable(d);
} catch (IOException e) {
Log.d("ImageManager", "Error: " + e);
}
}
}