When I click on my button I can select the photo and it shows in my imageView.
But when I click to save, my imageView has become NULL. Anyone can help me?
Bitmap always comes null.
I changed
Bitmap bitmap =
((BitmapDrawable)imageViewProeto.getDrawable()).getBitmap();
to
Bitmap bitmap = imageViewProeto.getDrawingCache();
https://i.stack.imgur.com/S7gcN.jpg
BitmapDrawable draw = (BitmapDrawable) iv.getDrawable();
Bitmap bitmap = draw.getBitmap();
To save Image in Your Gallery :
FileOutputStream outStream = null;
File sdCard = Environment.getExternalStorageDirectory();
File dir = new File(sdCard.getAbsolutePath() + "/YourFolderName");
dir.mkdirs();
String fileName = String.format("%d.jpg", System.currentTimeMillis());
File outFile = new File(dir, fileName);
outStream = new FileOutputStream(outFile);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outStream);
outStream.flush();
outStream.close();
Refresh Gallery :
Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
intent.setData(Uri.fromFile(file));
sendBroadcast(intent);
And Dont Forget to add permission in your Menifest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
Related
I am developing and android blog application where I want to share my current blog page screenshot.I try but it showing file format is not supported..please help me to find my error..Thanks in advance
MyAdapter.java
sendImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Bitmap app_snap = ((BitmapDrawable)movie_image.getDrawable()).getBitmap();
String file_path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/SaveImg";
System.out.println("****FILEPATH **** : " + file_path);
File imagePath = new File(Environment.getExternalStorageDirectory() + "/scr.png");
FileOutputStream fos;
try {
fos = new FileOutputStream(imagePath);
System.out.println("****FILEPATH1 **** : " + file_path);
app_snap.compress(Bitmap.CompressFormat.PNG, 200, fos);
System.out.println("****FILEPATH2 **** : " + file_path);
fos.flush();
fos.close();
}
catch (IOException e) {
System.out.println("GREC****** "+ e.getMessage());
}
Intent sharingIntent = new Intent();
Uri imageUri = Uri.parse(imagePath.getAbsolutePath());
sharingIntent.setAction(Intent.ACTION_SEND);
sharingIntent.setType("image/png");
sharingIntent.putExtra(Intent.EXTRA_STREAM, imageUri);
context.startActivity(sharingIntent);
}
});
Here is the code that allowed my screenshot to be stored on an SD card and used later for whatever your needs are:
First, you need to add a proper permission to save the file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is the code (running in an Activity):
private void takeScreenshot() {
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
try {
// image naming and path to include sd card appending name you choose for file
String mPath = Environment.getExternalStorageDirectory().toString() + "/" + now + ".jpg";
// create bitmap screen capture
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
File imageFile = new File(mPath);
FileOutputStream outputStream = new FileOutputStream(imageFile);
int quality = 100;
bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);
outputStream.flush();
outputStream.close();
openScreenshot(imageFile);
} catch (Throwable e) {
// Several error may come out with file handling or DOM
e.printStackTrace();
}
}
And this is how you can open the recently generated image:
private void openScreenshot(File imageFile) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
Uri uri = Uri.fromFile(imageFile);
intent.setDataAndType(uri, "image/*");
startActivity(intent);
}
If you want to use this on fragment view then use:
View v1 = getActivity().getWindow().getDecorView().getRootView();
instead of
View v1 = getWindow().getDecorView().getRootView();
on takeScreenshot() function
Note:
This solution doesn't work if your dialog contains a surface view. For details please check the answer to the following question:
Android Take Screenshot of Surface View Shows Black Screen
if u have any doubt please go through this link
You can get the Bitmap of your screen view inside your layouts. Where view will be your layout views like Linear or RelativeLayout
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
Bitmap returnedBitmap = view.getDrawingCache();
then have to convert into byte[] so that you can send with the Intent like this following:
ByteArrayOutputStream stream = new ByteArrayOutputStream();
returnedBitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
and send data with Intent like this:
Intent intent = new Intent(this, SecondActivity.class);
intent.putExtra("bitmap_",byteArray);
get Intent on your SecondActivity like this:
byte[] byteArray = getIntent().getByteArrayExtra("bitmap_");
Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
I'm trying to, after makes an bitmap from my relative layout, save the bitmap on internal storage. But, the image just get shorter on layout, and no file is saved.
Layout_to_Image layout_to_image;
RelativeLayout relativeLayout;
Bitmap bitmap;
relativeLayout=(RelativeLayout)findViewById(R.id.activity_main);
layout_to_image=new Layout_to_Image(MainActivity.this,relativeLayout);
bitmap=layout_to_image.convert_layout();
try {
Date now = new Date();
String nomeImagem = Environment.getExternalStorageState().toString()+"/"+now+".jpg";
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] bitmapdata = stream.toByteArray();
File img = new File(nomeImagem, "croqui.jpg");
FileOutputStream outputStream = openFileOutput(nomeImagem, MODE_WORLD_READABLE);
outputStream.write(bitmapdata, 0, bitmapdata.length);
outputStream.flush();
outputStream.close();
} catch (Throwable e){
e.printStackTrace();
}
You are saving your image in the external storage and not in an internal storage,
try to add this permission in your manifest.xml file
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
I am using HTC M9 with Android 5.0.2 and I have an image that I display on the screen in an ImageView.
On a button click, I am save the image locally on the device. And on another button click, I am trying to delete the image from my device and from my container.
I am using the accepted and in Saving and Reading Bitmaps/Images from Internal memory in Android to save and retrieve the image:
On Save_ButtonClick:
private void saveToInternalStorage(Bitmap bitmapImage, int ImageNumber){
ContextWrapper cw = new ContextWrapper(getApplicationContext());
// path to /data/data/yourapp/app_data/imageDir
File MyDirectory = cw.getDir("imageDir", Context.MODE_PRIVATE);
// Create imageDir
File MyPath = new File(MyDirectory,"Image" + ImageNumber + ".jpg");
// Add the path to the container
ImagePathes.add("Image" + ImageNumber + ".jpg");
FileOutputStream fos = null;
try {
fos = new FileOutputStream(MyPath);
// Use the compress method on the BitMap object to write image to the OutputStream
bitmapImage.compress(Bitmap.CompressFormat.PNG, 100, fos);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
//return MyDirectory.getAbsolutePath();
}
I tried the answers in Delete file from internal storage and ImagesPathes still does not change, and I still see the image on the screen. I am using this code to delete my file:
public void DeleteImage(View view)
{
try
{
// remove the file from internal storage
ContextWrapper cw = new ContextWrapper(this);
File MyDirectory = cw.getDir("imageDir", Context.MODE_PRIVATE);
String path = MyDirectory.getAbsolutePath();
File fileToBeDeleted = new File(getFilesDir(), ImagesNames.get(SelectedIndex)); // current image from my ArrayList - Bitmap
boolean WasDeleted = fileToBeDeleted.delete();
//Or
//File dir = getFilesDir();
//File file = new File(dir, ImagesNames.get(SelectedIndex));
//boolean deleted = file.delete();
// remove file name from my array
ImagesNames.remove(SelectedIndex);
SelectedIndex++;
} catch (Exception e)
{
System.err.println(e.toString());
}
}
There is no error, it is just that WasDeleted is always false and ImagesPathes does not change. What is the problem?
Edit:
Manifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.kkhalaf.mpconbot.test">
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="23" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application>
<uses-library android:name="android.test.runner" />
</application>
<instrumentation android:name="android.test.InstrumentationTestRunner"
android:targetPackage="com.example.kkhalaf.mpconbot"
android:handleProfiling="false"
android:functionalTest="false"
android:label="Tests for com.example.kkhalaf.mpconbot"/>
</manifest>
Path when Saving: /data/data/com.example.kkhalaf.mpconbot/files/Image0.jpg
Path when Deleting: /data/data/com.example.kkhalaf.mpconbot/files/Image0.jpg
It turned out that my problem is on this line:
ContextWrapper cw = new ContextWrapper(this);
File MyDirectory = cw.getDir("imageDir", Context.MODE_PRIVATE);
String path = MyDirectory.getAbsolutePath();
File fileToBeDeleted = new File(getFilesDir(), ImagesNames.get(SelectedIndex)); // here
boolean WasDeleted = fileToBeDeleted.delete();
And I should have done this instead:
ContextWrapper cw = new ContextWrapper(this);
File MyDirectory = cw.getDir("imageDir", Context.MODE_PRIVATE);
String path = MyDirectory.getAbsolutePath();
File fileToBeDeleted = new File(path + "//Image" + SelectedIndex + ".jpg"); // current image
boolean WasDeleted = fileToBeDeleted.delete();
ASL (android-screenshot-library) Have a working example?
OR
How do you show an example used (How to use)?
(sorry for my English)
private void getScreenShot() {
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
try {
// image naming and path to include sd card appending name you choose for file
String mPath = Environment.getExternalStorageDirectory().toString() + "/" + now + ".jpg";
// create bitmap screen capture
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
File imageFile = new File(mPath);
FileOutputStream outputStream = new FileOutputStream(imageFile);
int quality = 100;
bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);
outputStream.flush();
outputStream.close();
openScreenshot(imageFile);
} catch (Throwable e) {
// Several error may come out with file handling or OOM
e.printStackTrace();
}
}
To open the captured snap.
private void openScreenshot(File imageFile) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri uri = Uri.fromFile(imageFile);
intent.setDataAndType(uri, "image/*");
startActivity(intent);
}
You need
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
I'm using couple of commands from this answer to save my bitmap on SD card and then share it via intent.
and here is my final code:
View u = findViewById(R.id.mainL);
u.setDrawingCacheEnabled(true);
LinearLayout z = (LinearLayout) findViewById(R.id.mainL);
int totalHeight = z.getHeight();
int totalWidth = z.getWidth();
u.layout(0, 0, totalWidth, totalHeight);
u.buildDrawingCache(true);
Bitmap b = Bitmap.createBitmap(u.getDrawingCache());
u.setDrawingCacheEnabled(false);
String filePath = Environment.getExternalStorageDirectory()
+ File.separator + "pics/screenshot.jpeg";
File imagePath = new File(filePath);
FileOutputStream fos;
try {
fos = new FileOutputStream(imagePath);
b.compress(CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
Log.e("GREC", e.getMessage(), e);
} catch (IOException e) {
Log.e("GREC", e.getMessage(), e);
}
Uri bmpUri = Uri.parse(filePath);
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("image/jpeg");
shareIntent.putExtra(Intent.EXTRA_STREAM, bmpUri);
shareIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(Intent.createChooser(shareIntent, "Share"));
but now I have two problems.
1)the result Image (screenshot.png) is not reachable with mobile gallery (there is a image file in pics folder in sd card although).
2)when I try to share it via intent, it doesn't send and for example when I send it via Bluetooth the receiver gadget breaks the sending operation.
thanks.
ohk just paste this line after adding any pic in the gallery it will refresh your gallery
It worked for me hope will help u :)
sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(new File(filePath))));
try this
//save image into sdcard
FrameLayout f=(FrameLayout)findViewById(R.id.framelayout);
f.setDrawingCacheEnabled(true);
Bitmap bm = f.getDrawingCache();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] imageInByte1 = stream.toByteArray();
String path = Environment.getExternalStorageDirectory().toString();
File imgDirectory = new File(Environment.getExternalStorageDirectory()+"/images/");
imgDirectory.mkdirs();
OutputStream fOut = null;
File file = null;
file = new File(path,"/images/"+etcardname.getText().toString()+ ".png");
Toast.makeText(getBaseContext(), "saved at: " + file.getAbsolutePath(), Toast.LENGTH_LONG).show();
fOut = new FileOutputStream(file);
bm.compress(Bitmap.CompressFormat.PNG, 100, fOut);
fOut.flush();
fOut.close();
//share image
Intent share = new Intent(android.content.Intent.ACTION_SEND);
share.setType("image/*");
share.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + file));
startActivity(Intent.createChooser(share, "Share image using"));