send an image from an Activity to another Activity

Question

I have two activities in android studio. In Activity1 I have a button or image view and I want to when I clicked on it, send an image to Activity2 and when I get to Activity2, the image will be there. And when in Activity1 I clicked the button for second time, the Image in Activity2 will be gone. but I dont want click on image view and go to second activity. I want to click on it in first activity and just send the image to sec activity without go to sec activity automatically. and when I went to sec activity manually, the image will be there. And when I return to first activity and click the image view again, the image in sec activity will be disappear . how can I do that?

public class MainActivity extends AppCompatActivity {


    byte[] bytesImage;
    public static final String MyPREFERENCES = "MyPrefs";
    //use shared preferences to save button click count
    SharedPreferences sharedPreferences;
    String hide_image;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        sharedPreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);


        final ImageView imageview=(ImageView) findViewById(R.id.imageView);

        imageview.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (sharedPreferences.getString("activity1", "").equals("1")) {
                    //image is already clicked once
                    hide_image="1";
                }
                else{
                    hide_image="0";
                    imageview.buildDrawingCache(); //your imageview
                    Bitmap bitmap = imageview.getDrawingCache();
                    ByteArrayOutputStream ba = new ByteArrayOutputStream();
                    bitmap.compress(Bitmap.CompressFormat.PNG, 50, ba);
                    //save the image byte array
                    bytesImage=ba.toByteArray();
                    SharedPreferences.Editor editor = sharedPreferences.edit();
                    //set 1 as button is clicked
                    editor.putString("activity1", "1");
                    editor.commit();
                }
            }
        });


        Button btn=(Button) findViewById(R.id.button);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent i = new Intent(MainActivity.this,Main2Activity.class);
                i.putExtra("byteArray", bytesImage);
                i.putExtra("hideImage", hide_image);
                startActivity(i);
            }
        });

    }
}

hi, my question is different . please read it again. – Neamat Tabani Dec 21 '16 at 10:35 — Neamat Tabani, Dec 21 '16 at 10:35

rafsanahmad007 · Accepted Answer · 2016-12-21T18:58:02.360

1

In your first activity: use

 byte[] bytesImage;
 public static final String MyPREFERENCES = "MyPrefs";
 //use shared preferences to save button click count
 SharedPreferences sharedPreferences;
 String hide_image;

in onCreate()

sharedPreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);

Then set imageview click listener

imageview.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View view) {
                if (sharedPreferences.getString("activity1", "").equals("1")) {
                    //image is already clicked once
                    hide_image="1";
                }
           else{
               hide_image="0";
               Bitmap bitmap = ((BitmapDrawable)imageView.getDrawable()).getBitmap();
               ByteArrayOutputStream ba = new ByteArrayOutputStream();
               bitmap.compress(Bitmap.CompressFormat.PNG, 50, ba);
               //save the image byte array
               bytesImage=ba.toByteArray()
               SharedPreferences.Editor editor = sharedPreferences.edit();
                    //set 1 as button is clicked
                    editor.putString("activity1", "1");
                    editor.commit();
            }
        }
    });


manualButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent i = new Intent(this, NextActivity.class);
                i.putExtra("byteArray", bytesImage);
                i.putExtra("hideImage", hide_image);
                startActivity(i);
            }
        });

In your second activity

String hide=getIntent().getStringExtra("hideImage");
byte[] byteArray = getIntent().getByteArrayExtra("byteArray");
Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
if (hide.equals("0") {
    //show image only in first click
    ImageView previewThumbnail = new ImageView(this);   
    previewThumbnail.setImageBitmap(bmp);//set bitmap to imageview
}

edited Dec 21 '16 at 18:58

answered Dec 21 '16 at 08:28

rafsanahmad007

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Its not a good idea to send whole image via intent.Just pass its path – Rajesh Gosemath Dec 21 '16 at 08:45
@Androidjack sure it makes sense... – rafsanahmad007 Dec 21 '16 at 08:47
in second activity, how can i set bitmap to imageview – Neamat Tabani Dec 21 '16 at 09:04
just reference your imageView like imageview im= findViewById(R.id.imageview_name); then im.setImageBitmap(b); – rafsanahmad007 Dec 21 '16 at 09:06
Tnx. Please read the main question again. I dont want click on image view and go to second activity. I want to click on it in first activity and just send the image to sec activity without go to sec activity automatically. and when I went to sec activity manually, the image will be there. And when I return to first activity and click the image view again, the image in sec activity will be disappear . how can I do that? – Neamat Tabani Dec 21 '16 at 10:17
what do u mean go to sec activity manually?? – rafsanahmad007 Dec 21 '16 at 11:45
I mean go to sec acticity by another button not the imageView that contains the photo. And the main problem is that when i selected the imageview and sent the image to sec activity, i want to select the image for second time and the image in act2 will be disappear.tnx – Neamat Tabani Dec 21 '16 at 13:57
@NeamatTabani see the edited answer...don;t forget to accept it.. – rafsanahmad007 Dec 21 '16 at 17:44
tnx for your answer. it seems what i want. i used your codes and changed it but it dosent work. please look at my codes that added to question and tell what should i do and where i have to change or added more codes? – Neamat Tabani Dec 21 '16 at 18:27
what portion did not work? – rafsanahmad007 Dec 21 '16 at 18:29
when i click on imageView and THEN go to second activity, there is no image in sec activity – Neamat Tabani Dec 21 '16 at 18:36
what have to do in //use shared preferences to save button click count portion? – Neamat Tabani Dec 21 '16 at 18:42
yes...it used for count the click...see the edited second activity and image click listener ---also debug your code ...which value is passing...it should work – rafsanahmad007 Dec 21 '16 at 18:54
it dosent work :( . may i send you the project and take a look plz? – Neamat Tabani Dec 22 '16 at 07:35
i cant mark it yet because this error : Thanks for the feedback! Votes cast by those with less than 15 reputation are recorded, but do not change the publicly displayed post score. – Neamat Tabani Dec 22 '16 at 09:25
how can i send you the project? – Neamat Tabani Dec 22 '16 at 09:25
can you write your Email plz? – Neamat Tabani Dec 22 '16 at 09:25
i accepted it. and im sending you codes... – Neamat Tabani Dec 22 '16 at 09:34
i sent you the mail. did you get it? – Neamat Tabani Dec 22 '16 at 10:04
hi again. the codes you sent me dosent work well. i think you did not understand my question truly :( – Neamat Tabani Dec 22 '16 at 13:56

send an image from an Activity to another Activity

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