I want to pass high-quality images from one activity to another.
This is my main activity to pass the image.
package com.maymaps.picturestudio;
import static android.provider.AlarmClock.EXTRA_MESSAGE;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.FileProvider;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.FileObserver;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdSize;
import com.google.android.gms.ads.AdView;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private AdView mAdView;
private Button button1, button2, button3;
static final int REQUEST_IMAGE_CAPTURE = 1;
public static final int PICK_IMAGE = 2;
String currentPhotoPath;
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" timeStamp "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
currentPhotoPath = image.getAbsolutePath();
return image;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
getWindow().setStatusBarColor(getResources().getColor(R.color.Blue, this.getTheme()));
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().setStatusBarColor(getResources().getColor(R.color.Blue));
}
button1 = findViewById(R.id.button1);
button2 = findViewById(R.id.button2);
button3 = findViewById(R.id.button3);
button1.setOnClickListener(this);
button2.setOnClickListener(this);
button3.setOnClickListener(this);
mAdView = findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
AdSize adSize = new AdSize(300, 50);
mAdView.loadAd(adRequest);
}
@Override
public void onClick(View view) {
if (view.getId() == R.id.button1) {
openGallery();
}
if (view.getId() == R.id.button2) {
openCamera();
}
if (view.getId() == R.id.button3) {
}
}
private void openGallery() {
Intent getIntent = new Intent(Intent.ACTION_GET_CONTENT);
getIntent.setType("image/*");
Intent pickIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
pickIntent.setType("image/*");
Intent chooserIntent = Intent.createChooser(getIntent, "Select Image");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] {pickIntent});
startActivityForResult(chooserIntent, PICK_IMAGE);
}
private void openCamera() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File...
}
// Continue only if the File was successfully created
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(this,
"com.example.android.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
}
@Override
protected void onActivityResult(int reqCode, int resCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(reqCode, resCode, data);
if (resCode == RESULT_OK) {
if (reqCode == REQUEST_IMAGE_CAPTURE) {
if (data != null) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
//Starting activity (ImageViewActivity in my code) to preview image
Intent intent = new Intent(this, result.class);
intent.putExtra("BitmapImage", photo);
startActivity(intent);
}
} else if (reqCode == PICK_IMAGE) {
if (data.getData() != null) {
Uri imageUri = data.getData();
//Starting activity (ImageViewActivity in my code) to preview image
Intent intent = new Intent(this, result.class);
intent.putExtra("ImageUri", imageUri.toString());
startActivity(intent);
}
}
}
}
}
Receive activity
package com.maymaps.picturestudio;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.widget.ImageView;
public class result extends AppCompatActivity {
private ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_result);
imageView=findViewById(R.id.imageView3);
Uri selectedImgUri = getIntent().getData();
String[] selectedImgPath = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImgUri,
selectedImgPath, null, null, null);
cursor.moveToFirst();
int indexCol = cursor.getColumnIndex(selectedImgPath[0]);
String imgPath = cursor.getString(indexCol);
cursor.close();
imageView.setDrawingCacheEnabled(true);
imageView.setImageBitmap(BitmapFactory.decodeFile(imgPath));
/* Getting Image from Camera from Main Activity */
imageView.setDrawingCacheEnabled(true);
Uri CapturedImgUri = getIntent().getParcelableExtra("BitmapImage");
imageView.setImageURI(CapturedImgUri);
}
}
My Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.maymaps.picturestudio">
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-feature
android:name="android.hardware.camera"
android:required="true" />
<uses-feature
android:name="android.hardware.camera"
android:required="true" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:largeHeap="true"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.PictureStudio">
<activity
android:name=".result"
android:exported="false" />
<activity
android:name=".MainActivity"
android:exported="false" />
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-3940256099942544~3347511713" />
<activity
android:name=".Splash_Screen"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="com.example.android.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
<meta-data
android:name="preloaded_fonts"
android:resource="@array/preloaded_fonts" />
</application>
</manifest>
I don't know how to solve this. If any talented people know this please help me.
CodePudding user response：
You can use the "putExtra" function of the intent to pass the value you insert in the "findViewByID" function into the other activity.
CodePudding user response：
This can be solved using the following design pattern; You can have a singleton class that can also the assignment of this image from whatever activity or fragment of your choice.
For example; let this be your singleton
public class ActivityHolder {
private static ActivityHolder instance = null;
private ActivityHolder() {
}
public static ActivityHolder getInstance() {
if (instance == null) {
instance = new ActivityHolder();
}
return instance;
}
public ImageView imageView;
}
You can use the above class as follows;
Assuming you want to access the image content in the first activity i.e MainActivity.
ActivityHolder.getInstance().imageView = "some image object here"
Then in your resulting activity, you can access this image by calling the sigleton image view. So your image assignment might look like ; ImageView imageView = ActivityHolder.getInstance().imageView