// 根据uri获得绝对路径(原理不懂)
public static String getPath(Context context, Uri uri) {
String[] pojo = {MediaStore.Images.Media.DATA};
CursorLoader cursorLoader = new CursorLoader(context, uri, pojo, null, null, null);
Cursor cursor = cursorLoader.loadInBackground();
cursor.moveToFirst();
return cursor.getString(cursor.getColumnIndex(pojo[0]));
}
/**
* Takes a uri, and from it finds the absolute path to the media. It returns the absolute path as
* a string. </br></br>
*
* <p>CODE REUSE </br> URL:
* http://stackoverflow.com/questions/3401579/get-filename-and-path-from-uri-from-mediastore </br>
* DATE: NOV. 9, 2013 </br> License: CC- </br>
*
* @param contentUri Uri we want to find the path of. Note that it is of type Uri and not URI.
* @param context
* @return the absolute path of the Uri as a string
*/
private String getRealPathFromURI(Uri contentUri, Context context) {
String[] proj = {MediaStore.Images.Media.DATA};
CursorLoader loader = new CursorLoader(context, contentUri, proj, null, null, null);
Cursor cursor = loader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
public static Uri getLastRecordedVideoUri(Activity activity) {
String[] proj = {MediaStore.Video.Media._ID};
Uri contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
String sortOrder = MediaStore.Video.VideoColumns.DATE_TAKEN + " DESC";
CursorLoader loader = new CursorLoader(activity, contentUri, proj, null, null, sortOrder);
Cursor cursor = loader.loadInBackground();
cursor.moveToFirst();
return Uri.parse(contentUri.toString() + "/" + cursor.getLong(0));
}
// 获得照片的真实路径
public static String obtainFilePath(Context context, Uri uri) {
String[] projection = {MediaStore.Images.Media.DATA};
// Cursor cursor = managedQuery(uri, projection, null, null, null);//deprecated
CursorLoader cursorLoader = new CursorLoader(context, uri, projection, null, null, null);
Cursor cursor = cursorLoader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String path = cursor.getString(column_index);
Log.e(TAG, "文件真实路径:" + path);
cursor.close();
return path;
}
private String getRealPathFromURI(Uri contentUri) {
String[] proj = {MediaStore.Video.Media.DATA};
String result = "";
try {
CursorLoader loader = new CursorLoader(getActivity(), contentUri, proj, null, null, null);
Cursor cursor = loader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
result = cursor.getString(column_index);
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// Check which request we're responding to
if (requestCode == PICK_CONTACT_REQUEST) {
// Make sure the request was successful
if (resultCode == RESULT_OK) {
// Get the URI that points to the selected contact
Uri contactUri = data.getData();
// We only need the NUMBER column, because there will be only one row in the result
String[] projection = {
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER
};
CursorLoader cursorLoader =
new CursorLoader(getApplicationContext(), contactUri, projection, null, null, null);
Cursor cursor = cursorLoader.loadInBackground();
cursor.moveToFirst();
// Retrieve the phone number from the NUMBER column
int numberColumn = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String number = cursor.getString(numberColumn);
int nameColumn = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);
String name = cursor.getString(nameColumn);
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
Editor editor = sharedPreferences.edit();
editor.putString(name, number);
editor.commit();
if (!listItems.contains(name)) {
listItems.add(name);
adapter.notifyDataSetChanged();
}
// ListView contactList = (ListView) findViewById(R.id.contactView);
Log.i(TAG, "Phone number: " + String.valueOf(number));
// Do something with the phone number...
}
}
}
private Cursor getCursor() {
Cursor cursor;
String[] projection = {
MediaStore.Images.Media.BUCKET_DISPLAY_NAME,
MediaStore.Images.Media._ID,
MediaStore.Images.Media.DATA,
"count(" + MediaStore.Images.Media._ID + ")"
};
String selection = " 0 == 0) group by " + MediaStore.Images.Media.BUCKET_DISPLAY_NAME + " -- (";
CursorLoader cLoader =
new CursorLoader(
this, MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, selection, null, null);
cursor = cLoader.loadInBackground();
return cursor;
}
/** 把uri转为File对象 */
public static File uri2File(Activity aty, Uri uri) {
if (android.os.Build.VERSION.SDK_INT < 11) {
// 在API11以下可以使用：managedQuery
String[] proj = {MediaStore.Images.Media.DATA};
@SuppressWarnings("deprecation")
Cursor actualimagecursor = aty.managedQuery(uri, proj, null, null, null);
int actual_image_column_index =
actualimagecursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
actualimagecursor.moveToFirst();
String img_path = actualimagecursor.getString(actual_image_column_index);
return new File(img_path);
} else {
// 在API11以上：要转为使用CursorLoader,并使用loadInBackground来返回
String[] projection = {MediaStore.Images.Media.DATA};
CursorLoader loader = new CursorLoader(aty, uri, projection, null, null, null);
Cursor cursor = loader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return new File(cursor.getString(column_index));
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == REQUEST_CAMERA) {
// setImageView();
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(mCapturedImageURI, projection, null, null, null);
int column_index_data = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String picturePath = cursor.getString(column_index_data);
} else if (requestCode == SELECT_FILE) {
Uri selectedImageUri = data.getData();
String[] projection = {MediaStore.MediaColumns.DATA};
CursorLoader cursorLoader =
new CursorLoader(this, selectedImageUri, projection, null, null, null);
Cursor cursor = cursorLoader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA);
cursor.moveToFirst();
String selectedImagePath = cursor.getString(column_index);
Bitmap bm;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(selectedImagePath, options);
final int REQUIRED_SIZE = 200;
int scale = 1;
while (options.outWidth / scale / 2 >= REQUIRED_SIZE
&& options.outHeight / scale / 2 >= REQUIRED_SIZE) scale *= 2;
options.inSampleSize = scale;
options.inJustDecodeBounds = false;
bm = BitmapFactory.decodeFile(selectedImagePath, options);
imageView.setImageBitmap(bm);
}
}
}
