如何使用解码功能来压缩和解码我的图像？如何调用我的解码功能？
这一行：
image = decodeFile(getResources(),R.drawable.my);
显示错误：
SQLiteDemoActivity 类型中的方法 decodeFile(File) 不适用于参数 (Resources, int)
编码：
ArrayList<Contact> imageArry = new ArrayList<Contact>();
ContactImageAdapter adapter;
Button BrowseButton;
Button BrowseButton2;
DataBaseHandler db;
public static Bitmap image ;
public static byte[] imageInByte;
ByteArrayOutputStream stream = new ByteArrayOutputStream();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
db = new DataBaseHandler(this);
BrowseButton=(Button)findViewById(R.id.BrowseButton);
BrowseButton2=(Button)findViewById(R.id.BrowseButton2);
adapter = new ContactImageAdapter(this, R.layout.screen_list, imageArry);
BrowseButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
< this line show error---> image = decodeFile(getResources(),R.drawable.my);
//BitmapFactory.decodeFile(photo.toString(),options);
image.compress(CompressFormat.JPEG, 100, stream);
imageInByte = stream.toByteArray();
Log.d("Insert: ", "Inserting ..");
db.addContact(new Contact("FaceBook", imageInByte));
}
});
BrowseButton2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
List<Contact> contacts = db.getAllContacts();
for (Contact cn : contacts) {
String log = "ID:" + cn.getID() + " Name: " + cn.getName() + " ,Image: " + cn.getImage();
//Writing Contacts to log
Log.d("Result: ", log);
//add contacts data in arrayList
imageArry.add(cn);
}
ListView dataList = (ListView) findViewById(R.id.list);
dataList.setAdapter(adapter);
try {
stream.close();
stream = null;
} catch (IOException e) {
e.printStackTrace();
}
}
});
private Bitmap decodeFile(File f) {
try {
// decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(new FileInputStream(f), null, o);
// Find the correct scale value. It should be the power of 2.
final int REQUIRED_SIZE = 70;
int width_tmp = o.outWidth, height_tmp = o.outHeight;
int scale = 1;
while (true) {
if (width_tmp / 2 < REQUIRED_SIZE || height_tmp / 2 < REQUIRED_SIZE)
break;
width_tmp /= 2;
height_tmp /= 2;
scale++;
}