在Android中,从图库或Google相册获取实际文件路径的解决方法可以通过以下步骤实现:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri uri = data.getData();
String filePath = getRealPathFromURI(uri);
// 使用filePath进行后续操作
}
}
private String getRealPathFromURI(Uri uri) {
String filePath;
if (Build.VERSION.SDK_INT < 11)
filePath = RealPathUtil.getRealPathFromURI_BelowAPI11(this, uri);
else if (Build.VERSION.SDK_INT < 19)
filePath = RealPathUtil.getRealPathFromURI_API11to18(this, uri);
else
filePath = RealPathUtil.getRealPathFromURI_API19(this, uri);
return filePath;
}
public class RealPathUtil {
@SuppressLint("NewApi")
public static String getRealPathFromURI_API19(Context context, Uri uri) {
String filePath = "";
String wholeID = DocumentsContract.getDocumentId(uri);
String id = wholeID.split(":")[1];
String[] column = { MediaStore.Images.Media.DATA };
String sel = MediaStore.Images.Media._ID + "=?";
Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, column, sel, new String[]{ id }, null);
int columnIndex = cursor.getColumnIndex(column[0]);
if (cursor.moveToFirst()) {
filePath = cursor.getString(columnIndex);
}
cursor.close();
return filePath;
}
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
String result = null;
CursorLoader cursorLoader = new CursorLoader(context, contentUri, proj, null, null, null);
Cursor cursor = cursorLoader.loadInBackground();
if (cursor != null) {
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
result = cursor.getString(column_index);
cursor.close();
}
return result;
}
public static String getRealPathFromURI_BelowAPI11(Context context, Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String result = cursor.getString(column_index);
cursor.close();
return result;
}
}
以上代码示例中的RealPathUtil类实现了根据不同版本获取实际文件路径的方法。根据不同的API版本,分别使用了不同的方式来获取实际文件路径。在回调方法中,首先获取选择的图片的Uri,然后调用getRealPathFromURI()方法来获取实际文件路径。最后,可以使用获取到的实际文件路径进行后续的操作。