无法从相机意图选择器4.2.2 AVD得到的图像 [英] Can't get image from camera with intent chooser on 4.2.2 AVD
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问题描述
我的工作我的应用程序的一部分，允许用户无论是从相机或从图库中选择图像，使用意向选择器。
I'm working on a part of my application that allows a user to select an image either from camera or from gallery, using an Intent chooser.
这是我的2.2.1的Android手机上工作正常，但是当我编译它在4.2.2 AVD它时，我用相机将返回一个空指针错误，
It's working fine on my 2.2.1 android phone, but when i compile it on a 4.2.2 AVD it returns a null pointer error when i use the camera,
public void onClick(View View)
{
Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT,null);
galleryIntent.setType("image/*");
galleryIntent.setAction(Intent.ACTION_GET_CONTENT);
galleryIntent.addCategory(Intent.CATEGORY_OPENABLE);
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
Intent chooser = new Intent(Intent.ACTION_CHOOSER);
chooser.putExtra(Intent.EXTRA_INTENT, galleryIntent);
chooser.putExtra(Intent.EXTRA_TITLE, "Chooser");
Intent[] intentArray = {cameraIntent};
chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
startActivityForResult(chooser,REQUEST_CODE);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK)
{
try
{
if (bitmap != null)
{
bitmap.recycle();
}
InputStream stream = getContentResolver().openInputStream(data.getData());
bitmap = BitmapFactory.decodeStream(stream);
stream.close();
imageView.setImageBitmap(bitmap);
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
super.onActivityResult(requestCode, resultCode, data);
}
}
这是我得到的错误：结果
5月5日至五日：03：31.730：E / AndroidRuntime（820）：产生的原因：显示java.lang.NullPointerException
this is the error i get:
05-05 05:03:31.730: E/AndroidRuntime(820): Caused by: java.lang.NullPointerException
和它说，这个问题是在这一行：
And it said that the problem is in this line :
InputStream stream = getContentResolver().openInputStream(data.getData());
我究竟做错了什么？
What am i doing wrong?
更新：
现在它的工作，这里是解决方案：
Now it's working and here is the solution:
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK)
{
if(data.getData()!=null)
{
try
{
if (bitmap != null)
{
bitmap.recycle();
}
InputStream stream = getContentResolver().openInputStream(data.getData());
bitmap = BitmapFactory.decodeStream(stream);
stream.close();
imageView.setImageBitmap(bitmap);
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
}
else
{
bitmap=(Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(bitmap);
}
super.onActivityResult(requestCode, resultCode, data);
}
}
谢谢您的帮助！
推荐答案
喜有这个code一试。
Hi have a try with this code.
以下code是相机按钮单击作品：
following code is for camera button click works :
imgviewCamera.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//define the file-name to save photo taken by Camera activity
String fileName = "new-photo-name.jpg";
//create parameters for Intent with filename
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, fileName);
values.put(MediaStore.Images.Media.DESCRIPTION,"Image capture by camera");
//imageUri is the current activity attribute, define and save it for later usage (also in onSaveInstanceState)
imageUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
//create new Intent
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
startActivityForResult(intent, PICK_Camera_IMAGE);
}
});
OnActivityresult code will be like below
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Uri selectedImageUri = null;
String filePath = null;
switch (requestCode) {
case PICK_Camera_IMAGE:
if (resultCode == RESULT_OK) {
//use imageUri here to access the image
selectedImageUri = imageUri;
} else if (resultCode == RESULT_CANCELED) {
Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show();
}
break;
}
if(selectedImageUri != null){
try {
// OI FILE Manager
String filemanagerstring = selectedImageUri.getPath();
// MEDIA GALLERY
String selectedImagePath = getPath(selectedImageUri);
if (selectedImagePath != null) {
filePath = selectedImagePath;
} else if (filemanagerstring != null) {
filePath = filemanagerstring;
} else {
Toast.makeText(getApplicationContext(), "Unknown path",
Toast.LENGTH_LONG).show();
Log.e("Bitmap", "Unknown path");
}
if (filePath != null) {
Toast.makeText(getApplicationContext(), " path" + filePath,
Toast.LENGTH_LONG).show();
Intent i = new Intent(getApplicationContext(), EditorActivity.class);
// passing array index
i.putExtra("id", filePath);
startActivity(i);
}
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Internal error",
Toast.LENGTH_LONG).show();
Log.e(e.getClass().getName(), e.getMessage(), e);
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
if (cursor != null) {
// HERE YOU WILL GET A NULLPOINTER IF CURSOR IS NULL
// THIS CAN BE, IF YOU USED OI FILE MANAGER FOR PICKING THE MEDIA
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} else
return null;
}
不要忘了添加摄像头权限清单文件。结果
希望这会帮助你。
dont forget to add camera permission in manifest file.
hope this will help you.
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