我想裁剪捕获/选定的图像并将其上传到服务器。
我面临什么问题：裁剪图像后，我没有得到该裁剪图像的实际路径。我已经按照以下方式完成了我的代码。我正在正确裁剪图像，这里一切正常，但 imageview 不显示原始图像而不是裁剪图像。
但是，当我在 Bitmap photo = extras.getParcelable("data");内部获取位图时，onActivityResult()我会在 imageview 中显示裁剪图像。但无法获得该裁剪图像的绝对路径。
任何人都可以请指导我我缺乏的地方。我尝试了许多 SO 链接，但无法为我的问题找到确切的解决方案。
这是我的代码：
public class MainActivity extends Activity {
private Uri mImageCaptureUri;
private ImageView mImageView;
private static final int PICK_FROM_CAMERA = 1;
private static final int CROP_FROM_CAMERA = 2;
private static final int PICK_FROM_FILE = 3;
private String selectedImagePath = "";
boolean GallaryPhotoSelected = false;
public static String Finalmedia = "";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final String[] items = new String[] { "Take from camera",
"Select from gallery" };
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.select_dialog_item, items);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Select Image");
builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) { // pick from
// camera
if (item == 0) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
mImageCaptureUri = Uri.fromFile(new File(Environment
.getExternalStorageDirectory(), "tmp_avatar_"
+ String.valueOf(System.currentTimeMillis())
+ ".jpg"));
intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
mImageCaptureUri);
try {
intent.putExtra("return-data", true);
startActivityForResult(intent, PICK_FROM_CAMERA);
} catch (ActivityNotFoundException e) {
e.printStackTrace();
}
} else { // pick from file
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,
"Complete action using"), PICK_FROM_FILE);
}
}
});
final AlertDialog dialog = builder.create();
Button button = (Button) findViewById(R.id.btn_crop);
mImageView = (ImageView) findViewById(R.id.iv_photo);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.show();
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != RESULT_OK)
return;
switch (requestCode) {
case PICK_FROM_CAMERA:
doCrop();
break;
case PICK_FROM_FILE:
mImageCaptureUri = data.getData();
Log.i("TAG",
"After Crop mImageCaptureUri " + mImageCaptureUri.getPath());
GallaryPhotoSelected = true;
doCrop();
break;
case CROP_FROM_CAMERA:
Bundle extras = data.getExtras();
selectedImagePath = mImageCaptureUri.getPath();
Log.i("TAG", "After Crop selectedImagePath " + selectedImagePath);
if (GallaryPhotoSelected) {
selectedImagePath = getRealPathFromURI(mImageCaptureUri);
Log.i("TAG", "Absolute Path " + selectedImagePath);
GallaryPhotoSelected = true;
}
Finalmedia = selectedImagePath;
Log.i("TAG", "Finalmedia Path " + Finalmedia);
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
Bitmap bm = BitmapFactory.decodeFile(Finalmedia);
mImageView.setImageBitmap(bm);
}
// File f = new File(mImageCaptureUri.getPath());
//
// if (f.exists()) f.delete();
break;
}
}
public static Bitmap decodeFile(String path) {
int orientation;
try {
if (path == null) {
return null;
}
// decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
// 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 = 2;
// while (true) {
// if (width_tmp / 2 < REQUIRED_SIZE
// || height_tmp / 2 < REQUIRED_SIZE)
// break;
// width_tmp /= 2;
// height_tmp /= 2;
// scale++;
// }
// decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
Bitmap bm = BitmapFactory.decodeFile(path, o2);
Bitmap bitmap = bm;
ExifInterface exif = new ExifInterface(path);
orientation = exif
.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);
Log.e("ExifInteface .........", "rotation =" + orientation);
// exif.setAttribute(ExifInterface.ORIENTATION_ROTATE_90, 90);
Log.e("orientation", "" + orientation);
Matrix m = new Matrix();
if ((orientation == ExifInterface.ORIENTATION_ROTATE_180)) {
m.postRotate(180);
// m.postScale((float) bm.getWidth(), (float) bm.getHeight());
// if(m.preRotate(90)){
Log.e("in orientation", "" + orientation);
bitmap = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(),
bm.getHeight(), m, true);
return bitmap;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_90) {
m.postRotate(90);
Log.e("in orientation", "" + orientation);
bitmap = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(),
bm.getHeight(), m, true);
return bitmap;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
m.postRotate(270);
Log.e("in orientation", "" + orientation);
bitmap = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(),
bm.getHeight(), m, true);
return bitmap;
}
return bitmap;
} catch (Exception e) {
return null;
}
}
public String getRealPathFromURI(Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(contentUri, proj, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
private void doCrop() {
final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setType("image/*");
List<ResolveInfo> list = getPackageManager().queryIntentActivities(
intent, 0);
int size = list.size();
if (size == 0) {
Toast.makeText(this, "Can not find image crop app",
Toast.LENGTH_SHORT).show();
return;
} else {
intent.setData(mImageCaptureUri);
intent.putExtra("outputX", 200);
intent.putExtra("outputY", 200);
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("scale", true);
intent.putExtra("return-data", true);
if (size == 1) {
Intent i = new Intent(intent);
ResolveInfo res = list.get(0);
i.setComponent(new ComponentName(res.activityInfo.packageName,
res.activityInfo.name));
startActivityForResult(i, CROP_FROM_CAMERA);
} else {
for (ResolveInfo res : list) {
final CropOption co = new CropOption();
co.title = getPackageManager().getApplicationLabel(
res.activityInfo.applicationInfo);
co.icon = getPackageManager().getApplicationIcon(
res.activityInfo.applicationInfo);
co.appIntent = new Intent(intent);
co.appIntent
.setComponent(new ComponentName(
res.activityInfo.packageName,
res.activityInfo.name));
cropOptions.add(co);
}
CropOptionAdapter adapter = new CropOptionAdapter(
getApplicationContext(), cropOptions);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Choose Crop App");
builder.setAdapter(adapter,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
startActivityForResult(
cropOptions.get(item).appIntent,
CROP_FROM_CAMERA);
}
});
builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
if (mImageCaptureUri != null) {
getContentResolver().delete(mImageCaptureUri, null,
null);
mImageCaptureUri = null;
}
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
}
}