Hii这是我从相机或画廊拍摄图像的完整代码
//我的变量声明
protected static final int CAMERA_REQUEST = 0;
protected static final int GALLERY_REQUEST = 1;
Bitmap bitmap;
Uri uri;
Intent picIntent = null;
//点击
if (v.getId()==R.id.image_id){
startDilog();
}
//方法体
private void startDilog() {
AlertDialog.Builder myAlertDilog = new AlertDialog.Builder(yourActivity.this);
myAlertDilog.setTitle("Upload picture option..");
myAlertDilog.setMessage("Where to upload picture????");
myAlertDilog.setPositiveButton("Gallery", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
picIntent = new Intent(Intent.ACTION_GET_CONTENT,null);
picIntent.setType("image/*");
picIntent.putExtra("return_data",true);
startActivityForResult(picIntent,GALLERY_REQUEST);
}
});
myAlertDilog.setNegativeButton("Camera", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
picIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(picIntent,CAMERA_REQUEST);
}
});
myAlertDilog.show();
}
//剩下的事情
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode==GALLERY_REQUEST){
if (resultCode==RESULT_OK){
if (data!=null) {
uri = data.getData();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
try {
BitmapFactory.decodeStream(getContentResolver().openInputStream(uri), null, options);
options.inSampleSize = calculateInSampleSize(options, 100, 100);
options.inJustDecodeBounds = false;
Bitmap image = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri), null, options);
imageofpic.setImageBitmap(image);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}else {
Toast.makeText(getApplicationContext(), "Cancelled",
Toast.LENGTH_SHORT).show();
}
}else if (resultCode == RESULT_CANCELED) {
Toast.makeText(getApplicationContext(), "Cancelled",
Toast.LENGTH_SHORT).show();
}
}else if (requestCode == CAMERA_REQUEST) {
if (resultCode == RESULT_OK) {
if (data.hasExtra("data")) {
bitmap = (Bitmap) data.getExtras().get("data");
uri = getImageUri(YourActivity.this,bitmap);
File finalFile = new File(getRealPathFromUri(uri));
imageofpic.setImageBitmap(bitmap);
} else if (data.getExtras() == null) {
Toast.makeText(getApplicationContext(),
"No extras to retrieve!", Toast.LENGTH_SHORT)
.show();
BitmapDrawable thumbnail = new BitmapDrawable(
getResources(), data.getData().getPath());
pet_pic.setImageDrawable(thumbnail);
}
} else if (resultCode == RESULT_CANCELED) {
Toast.makeText(getApplicationContext(), "Cancelled",
Toast.LENGTH_SHORT).show();
}
}
}
private String getRealPathFromUri(Uri tempUri) {
Cursor cursor = null;
try {
String[] proj = { MediaStore.Images.Media.DATA };
cursor = this.getContentResolver().query(tempUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} finally {
if (cursor != null) {
cursor.close();
}
}
}
public static int calculateInSampleSize(
BitmapFactory.Options options, int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int halfHeight = height / 2;
final int halfWidth = width / 2;
// Calculate the largest inSampleSize value that is a power of 2 and keeps both
// height and width larger than the requested height and width.
while ((halfHeight / inSampleSize) > reqHeight
&& (halfWidth / inSampleSize) > reqWidth) {
inSampleSize *= 2;
}
}
return inSampleSize;
}
private Uri getImageUri(YourActivity youractivity, Bitmap bitmap) {
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);
String path = MediaStore.Images.Media.insertImage(youractivity.getContentResolver(), bitmap, "Title", null);
return Uri.parse(path);
}