At the click of a button, I want to start an Intent to take a picture, and then display it in my layout. I am using the following code:
private void takePicture() {
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
File photo = new File(Environment.getExternalStorageDirectory(),
"Pic.jpg");
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photo));
imageUri = Uri.fromFile(photo);
startActivityForResult(intent, 0);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case 0:
if (resultCode == Activity.RESULT_OK) {
Uri selectedImage = imageUri;
getContentResolver().notifyChange(selectedImage, null);
ImageView imageView = (ImageView) findViewById(R.id.ImageView);
ContentResolver cr = getContentResolver();
Bitmap bitmap;
try {
bitmap = android.provider.MediaStore.Images.Media
.getBitmap(cr, selectedImage);
imageView.setImageBitmap(Bitmap.createScaledBitmap(bitmap, bitmap.getHeight()/2, bitmap.getWidth()/2, false));
Toast.makeText(this, selectedImage.toString(),
Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(this, "Failed to load", Toast.LENGTH_SHORT)
.show();
}
}
The Picture is definitely showing, but when I change the activity and go back to this one, the picture goes away. How do I save it permanently?
Well, you will have to manually save the image either in SQL Lite or SD Card or wherever you want.
See this for storing image in SQLite
See this for storing image in SD Card
Try this as my code is working properly
public class PhotoActivity extends Activity {
/** The Constant PICK_IMAGE. */
private static final int PICK_IMAGE = 0;
/** The Constant PICK_IMAGE_FROM_GALLERY. */
private static final int PICK_IMAGE_FROM_GALLERY = 1;
/** The btn cancel. */
private Button btnPhotoCamera,btnPhotoGallery,btnCancel;
/** The img view. */
private ImageView imgView;
/** The u. */
private Uri u;
/* (non-Javadoc)
* #see android.app.Activity#onCreate(android.os.Bundle)
*/
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_photo_options);
imgView=(ImageView)findViewById(R.id.imgDisplayImage);
btnPhotoCamera=(Button)findViewById(R.id.btnPhotoCamera);
btnPhotoGallery=(Button)findViewById(R.id.btnPhotoGallery);
btnCancel=(Button)findViewById(R.id.btnCancel);
btnPhotoCamera.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent camera=new Intent();
camera.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
camera.putExtra("crop", "true");
File f=Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
u = Uri.fromFile(new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),"myFile.jpg"));
camera.putExtra(MediaStore.EXTRA_OUTPUT, u);
startActivityForResult(camera, PICK_IMAGE);
}
});
btnPhotoGallery.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, PICK_IMAGE_FROM_GALLERY);
}
});
btnCancel.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent goStartUp=new Intent(PhotoActivity.this, StartUpActivity.class);
goStartUp.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(goStartUp);
finish();
}
});
}
/* (non-Javadoc)
* #see android.app.Activity#onActivityResult(int, int, android.content.Intent)
*/
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
if (resultCode==RESULT_OK )
{
if(requestCode == PICK_IMAGE) {
InputStream is=null;
try {
is = this.getContentResolver().openInputStream(u);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap bmp=BitmapFactory.decodeStream(is);
imgView.setImageBitmap(bmp);
Log.i("Inside", "PICK_IMAGE");
}
if (requestCode == PICK_IMAGE_FROM_GALLERY) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Log.d("data",filePathColumn[0]);
Cursor cursor = getContentResolver().query(selectedImage,filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
imgView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
Log.i("Inside", "PICK_IMAGE_FROM_GALLERY");
}
}
}
}
XML File:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f0f0f0" >
<TextView
android:id="#+id/lblSelectOptions"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="20dp"
android:text="#string/two_options"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#ff0000" />
<Button
android:id="#+id/btnPhotoCamera"
android:layout_width="75dp"
android:layout_height="wrap_content"
android:layout_below="#+id/lblSelectOptions"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:text="#string/camera" />
<Button
android:id="#+id/btnPhotoGallery"
android:layout_width="75dp"
android:layout_height="wrap_content"
android:layout_below="#+id/btnPhotoCamera"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:text="#string/gallery" />
<Button
android:id="#+id/btnCancel"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_below="#+id/btnPhotoGallery"
android:layout_centerHorizontal="true"
android:layout_marginTop="19dp"
android:text="#string/cancel" />
<TextView
android:id="#+id/lblDisplayImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/btnCancel"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:text="#string/below_this_text_image_will_be_displayed"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#000000"
android:textSize="13dp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_below="#+id/lblDisplayImage"
android:layout_centerInParent="true"
android:layout_marginTop="10dp"
android:gravity="bottom" >
<!--
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent" >
-->
<ImageView
android:id="#+id/imgDisplayImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/lblDisplayImage"
android:layout_centerInParent="true"
android:contentDescription="#string/area_where_image_is_to_be_displayed" />
<!-- </ScrollView> -->
</RelativeLayout>
</RelativeLayout>
Also Modify the Android Manifest file as per your use with following:
<manifest....
<uses-sdk
android:minSdkVersion="3"
android:targetSdkVersion="21" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_VIDEO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-feature
android:name="android.hardware.camera"
android:required="false" />
<application....
..........
</application>
</manifest>
Related
I have an App that verifies the ID card by clicking photos from both sides, after clicking the picture front-side of the id card the user moves to another activity for clicking the picture back-side of the id card after completing those prosses the user redirect to another activity that the user sees both sides of the document into different ImageView but I don't know how to fetch or pass
those images on this Activity that user can see their ID card for confirmation.
Here is my front side-scan activity
public class Front_Scan extends AppCompatActivity {
ActivityResultLauncher<Intent> activityResultLauncher;
private static final int PERMISSION_CODE = 101;
public String currentPhotoPath;
Button frontImgCap;
Button frontImgCapAgain;
Button frontNext;
ImageView frontImg;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_front_scan);
frontImg = findViewById(R.id.Image_id_front);
frontImgCap = findViewById(R.id.imgCapture_front);
frontImgCap.setVisibility(VISIBLE);
frontImgCapAgain = findViewById(R.id.Front_imgCapture_again);
frontImgCapAgain.setVisibility(GONE);
frontNext = findViewById(R.id.front_next);
frontNext.setVisibility(INVISIBLE);
activityResultLauncher = registerForActivityResult(new ActivityResultContracts.StartActivityForResult()
, new ActivityResultCallback<ActivityResult>() {
#Override
public void onActivityResult(ActivityResult result) {
if (result.getResultCode() == RESULT_OK) {
File f = new File(currentPhotoPath);
frontImgCapAgain.setVisibility(VISIBLE);
frontImgCap.setVisibility(INVISIBLE);
frontNext.setVisibility(VISIBLE);
frontImg.setImageURI(Uri.fromFile(f));
}
}
});
frontImgCap.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//if system os is >= marshmallow, request runtime permission
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.CAMERA) ==
PackageManager.PERMISSION_DENIED ||
checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) ==
PackageManager.PERMISSION_DENIED) {
//permission not enable, request it
String[] permission = {Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE};
//show popup to request permissions
requestPermissions(permission, PERMISSION_CODE);
} else {
//permission already given
dispatchTakePictureIntent();
}
} else {
//system os < marshmallow
dispatchTakePictureIntent();
}
}
});
}
public void next(View view) {
Intent myIntent = new Intent(Front_Scan.this, back_scan.class);
Front_Scan.this.startActivity(myIntent);
finish();
}
public void scanAgain(View view) {
clearMyFiles();
onCreateLayouts();
frontImg.setImageDrawable(getResources().getDrawable(R.drawable.id_front));
}
void clearMyFiles() {
File imgFile = new File(currentPhotoPath);
if (imgFile != null) {
imgFile.delete();
}
}
public void onCreateLayouts() {
frontImgCap.setVisibility(VISIBLE);
frontImgCapAgain.setVisibility(GONE);
frontNext.setVisibility(INVISIBLE);
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case PERMISSION_CODE:
if (grantResults.length > 0 && grantResults[0] ==
PackageManager.PERMISSION_GRANTED) {
dispatchTakePictureIntent();
} else {
Toast.makeText(this, "permission denied...", Toast.LENGTH_SHORT).show();
}
return;
}
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "FRONT_ID_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;
}
private void dispatchTakePictureIntent() {
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.nyabaapplication.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
activityResultLauncher.launch(takePictureIntent);
}
}
}
}
Front Scan XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background"
android:orientation="vertical"
android:padding="30dp"
tools:context=".Front_Scan">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:gravity="center"
android:text="Scan Front Side"
android:textAlignment="center"
android:textAllCaps="false"
android:textColor="#color/yellow"
android:textSize="28sp"
android:textStyle="bold" />
<com.google.android.material.card.MaterialCardView
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_gravity="center"
android:layout_marginTop="60dp"
app:cardBackgroundColor="#color/background"
app:cardCornerRadius="22dp"
app:cardElevation="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center">
<ImageView
android:id="#+id/Image_id_front"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:scaleType="fitXY"
android:src="#drawable/id_front" />
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
<android.widget.Button
android:id="#+id/Front_imgCapture_again"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#drawable/flag_transparent"
android:text="Scan Again"
android:onClick="scanAgain"
android:layout_marginTop="8dp"
android:textAllCaps="false"
android:textColor="#color/yellow"
android:textSize="17sp"
android:visibility="gone" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Position your document inside the frame. Make sure that all the data is clearly visible."
android:textAlignment="center"
android:textColor="#color/gray"
android:textSize="16sp"/>
<android.widget.Button
android:id="#+id/imgCapture_front"
android:layout_width="220dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="60dp"
android:background="#drawable/button_style_ylo"
android:text="Scan Now"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="19sp"
android:textStyle="bold"
android:visibility="visible"/>
<android.widget.Button
android:id="#+id/front_next"
android:layout_width="220dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="-50dp"
android:background="#drawable/button_style_ylo"
android:text="Next Step"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="19sp"
android:textStyle="bold"
android:onClick="next"
android:visibility="invisible"/>
</LinearLayout>
Here is Back side-scan activity
public class back_scan extends AppCompatActivity {
ActivityResultLauncher<Intent> activityResultLauncher1;
private static final int PERMISSION_CODE = 101;
public String currentPhotoPath1;
Button backImgCap;
Button backImgCapAgain;
Button backNext;
ImageView backImg;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_back_scan);
backImg = findViewById(R.id.Image_id_back);
backImgCap = findViewById(R.id.imgCapture_back);
backImgCap.setVisibility(VISIBLE);
backImgCapAgain = findViewById(R.id.Back_imgCapture_again);
backImgCapAgain.setVisibility(GONE);
backNext = findViewById(R.id.back_next);
backNext.setVisibility(INVISIBLE);
activityResultLauncher1 = registerForActivityResult(new ActivityResultContracts.StartActivityForResult()
, new ActivityResultCallback<ActivityResult>() {
#Override
public void onActivityResult(ActivityResult result) {
if (result.getResultCode() == RESULT_OK) {
File f1 = new File(currentPhotoPath1);
backImgCapAgain.setVisibility(VISIBLE);
backImgCap.setVisibility(INVISIBLE);
backNext.setVisibility(VISIBLE);
backImg.setImageURI(Uri.fromFile(f1));
}
}
});
backImgCap.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//if system os is >= marshmallow, request runtime permission
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.CAMERA) ==
PackageManager.PERMISSION_DENIED ||
checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) ==
PackageManager.PERMISSION_DENIED) {
//permission not enable, request it
String[] permission = {Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE};
//show popup to request permissions
requestPermissions(permission, PERMISSION_CODE);
} else {
//permission already given
dispatchTakePictureIntent1();
}
} else {
//system os < marshmallow
dispatchTakePictureIntent1();
}
}
});
}
public void next1(View view) {
Intent myIntent = new Intent(back_scan.this, scanned_copy.class);
back_scan.this.startActivity(myIntent);
finish();
}
public void scanAgainBack(View view) {
clearMyFiles1();
onCreateLayouts1();
backImg.setImageDrawable(getResources().getDrawable(R.drawable.id_back));
}
void clearMyFiles1() {
File imgFile1 = new File(currentPhotoPath1);
if (imgFile1 != null) {
imgFile1.delete();
}
}
public void onCreateLayouts1() {
backImgCap.setVisibility(VISIBLE);
backImgCapAgain.setVisibility(GONE);
backNext.setVisibility(INVISIBLE);
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case PERMISSION_CODE:
if (grantResults.length > 0 && grantResults[0] ==
PackageManager.PERMISSION_GRANTED) {
dispatchTakePictureIntent1();
} else {
Toast.makeText(this, "permission denied...", Toast.LENGTH_SHORT).show();
}
return;
}
}
private File createImageFile1() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "BACK_ID_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
currentPhotoPath1 = image.getAbsolutePath();
return image;
}
private void dispatchTakePictureIntent1() {
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 = createImageFile1();
} 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.nyabaapplication.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
activityResultLauncher1.launch(takePictureIntent);
}
}
}
}
Back Scan XML file is almost same as front side XML
Here is the activity that shows both sides of the ID Card together
public class scanned_copy extends AppCompatActivity {
Button finishBtn;
ImageView scanIDBack;
ImageView scanIDFront;
String storeFrontScan;
String storeBackScan="BACK_ID_JPEG.jpg";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scanned_copy);
readFrontImgFromFile();
readBackImgFromFile();
scanIDBack = findViewById(R.id.Scan_id_back);
scanIDFront = findViewById(R.id.Scan_id_front);
finishBtn = findViewById(R.id.ScanfinishBtn);
finishBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(scanned_copy.this, WellDone.class);
startActivity(intent);
finish();
}
});
}
public void readFrontImgFromFile()
{
File imgFileFront = new File(getExternalFilesDir(Environment.DIRECTORY_PICTURES)+storeFrontScan);
if(imgFileFront.exists())
{
scanIDFront.setImageURI(Uri.fromFile(imgFileFront));
}
}
public void readBackImgFromFile()
{
File imgFileBack = new File(getExternalFilesDir(Environment.DIRECTORY_PICTURES)+storeBackScan);
if(imgFileBack.exists())
{
scanIDBack.setImageURI(Uri.fromFile(imgFileBack));
}
}
}
The XML File of this Activity
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background"
android:scrollbars="none"
tools:context=".scanned_copy">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:gravity="center"
android:text="Scanned ID Card"
android:textAlignment="center"
android:textAllCaps="false"
android:textColor="#color/yellow"
android:textSize="28sp"
android:textStyle="bold" />
<ProgressBar
android:id="#+id/progressBar4"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="174dp"
android:layout_height="26dp"
android:layout_gravity="center"
android:layout_marginTop="16dp"
android:progress="85"
android:progressTint="#color/yellow" />
<com.google.android.material.card.MaterialCardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginHorizontal="20dp"
app:cardBackgroundColor="#color/primary_gray"
app:cardCornerRadius="22dp"
app:cardElevation="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:padding="10dp"
android:text="Have a final check if all data is clearly visible and that it matches the information you have entered in previous steps."
android:textAlignment="center"
android:textColor="#color/gray"
android:textSize="16sp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center_horizontal"
android:text="Front Side"
android:textSize="26dp"
android:textStyle="bold"
android:textColor="#color/light_gray"
android:layout_marginTop="30dp"/>
<com.google.android.material.card.MaterialCardView
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:layout_marginHorizontal="10dp"
app:cardBackgroundColor="#color/primary_gray"
app:cardCornerRadius="22dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center">
<ImageView
android:id="#+id/Scan_id_front"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:scaleType="fitXY"
android:src="#drawable/id_front" />
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center_horizontal"
android:text="Back Side"
android:textSize="26dp"
android:textStyle="bold"
android:textColor="#color/light_gray"
android:layout_marginTop="30dp"/>
<com.google.android.material.card.MaterialCardView
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:layout_marginHorizontal="10dp"
app:cardBackgroundColor="#color/primary_gray"
app:cardCornerRadius="22dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center">
<ImageView
android:id="#+id/Scan_id_back"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:scaleType="fitXY"
android:src="#drawable/id_back" />
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
<android.widget.Button
android:id="#+id/ScanfinishBtn"
android:layout_width="220dp"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginBottom="40dp"
android:background="#drawable/button_style_ylo"
android:text="Finish Verification"
android:textAllCaps="false"
android:textColor="#color/white"
android:layout_gravity="center_horizontal"
android:textSize="19sp"
android:textStyle="bold"/>
</LinearLayout>
</ScrollView>
You have the path to the files that were saved. Pass them through to the last activity as intent extras.
https://developer.android.com/training/basics/firstapp/starting-activity
I have 3 buttons on my layout 1 visible and 2 invisible at the time when the app is open,
when I click the 1st visible button it's open the camera to click the picture after the picture was clicked the picture was displayed at an ImageView on that same layout. After the picture was displayed at that ImageView I want to make the 2 invisible buttons visible and the 1 visible button invisible but when I try to do this I gating this error.
here is my XML file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background"
android:orientation="vertical"
android:padding="30dp"
tools:context=".Front_Scan">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:gravity="center"
android:text="Scan Front Side"
android:textAlignment="center"
android:textAllCaps="false"
android:textColor="#color/yellow"
android:textSize="28sp"
android:textStyle="bold" />
<com.google.android.material.card.MaterialCardView
android:layout_width="match_parent"
android:layout_height="230dp"
android:layout_gravity="center"
android:layout_marginTop="30dp"
app:cardBackgroundColor="#color/background"
app:cardCornerRadius="22dp"
app:cardElevation="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:orientation="vertical">
<ImageView
android:id="#+id/Image_id_front"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:scaleType="fitXY"
android:src="#drawable/id_front" />
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
<Button
android:id="#+id/Front_imgCapture_again"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#drawable/flag_transparent"
android:text="Scan Again"
android:textAllCaps="false"
android:textColor="#color/yellow"
android:visibility="invisible"
android:textSize="17sp" />
<android.widget.Button
android:id="#+id/imgCapture_front"
android:layout_width="220dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="16dp"
android:background="#drawable/button_style_ylo"
android:text="Scan Now"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="19sp"
android:textStyle="bold"
android:visibility="visible"/>
<android.widget.Button
android:id="#+id/front_next"
android:layout_width="220dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="8dp"
android:background="#drawable/button_style_ylo"
android:text="Next Step"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="19sp"
android:textStyle="bold"
android:onClick="next"
android:visibility="invisible"/>
</LinearLayout>
enter image description here
here is my java class Code
public class Front_Scan extends AppCompatActivity {
private static final int PERMISSION_CODE = 1000;
private static final int IMAGE_CAPTURE_CODE = 1001;
Button frontImgCap;
Button frontImgCapAgain;
Button frontNext;
ImageView frontImg;
Uri image_uri;
private int REQUEST_CODE_PERMISSIONS = 101;
private String[] REQUIRED_PERMISSIONS = new String[]{"android.permission.CAMERA",
"android.permission.WRITE_EXTERNAL_STORAGE"};
AutoFitTextureView textureView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_front_scan);
frontImg = findViewById(R.id.Image_id_front);
frontImgCap = findViewById(R.id.imgCapture_front);
frontImgCapAgain = findViewById(R.id.imgCapture_again);
frontNext = findViewById(R.id.front_next);
frontImgCap.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//if system os is >= marshmallow, request runtime permission
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.CAMERA) ==
PackageManager.PERMISSION_DENIED ||
checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) ==
PackageManager.PERMISSION_DENIED) {
//permission not enable, request it
String[] permission = {Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE};
//show popup to request permissions
requestPermissions(permission, PERMISSION_CODE);
} else {
//permission already given
openCamera();
}
} else {
//system os < marshmallow
openCamera();
}
}
});
}
private void openCamera() {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, "New Picture");
values.put(MediaStore.Images.Media.DESCRIPTION, "From the camera");
image_uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
//Camera intent
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, image_uri);
startActivityForResult(cameraIntent,IMAGE_CAPTURE_CODE);
}
public void next(View view) {
Intent myIntent = new Intent(Front_Scan.this, back_scan.class);
Front_Scan.this.startActivity(myIntent);
finish();
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case PERMISSION_CODE:
if (grantResults.length > 0 && grantResults[0] ==
PackageManager.PERMISSION_GRANTED){
openCamera();
}else {
Toast.makeText(this, "permission denied...", Toast.LENGTH_SHORT).show();
}
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #NonNull Intent data) {
//called when image was captured from camera
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
frontImg.setImageURI(image_uri);
//geting error at this line//
frontImgCapAgain.setVisibility(VISIBLE);
frontImgCap.setVisibility(INVISIBLE);
frontNext.setVisibility(VISIBLE);
}
}
}
I think You should change something in Your AndroidManifest.xml file. Try adding the singleTop attribute to the Front_Scan <activity>. I've encountered a similar problem once and the attribute helped because, as the docs say:
If, when starting the activity, there is already an instance of the same activity class in the foreground that is interacting with the user, then re-use that instance.
So the code fragment in Your case should look like this:
<activity
android:name=".Front_Scan"
android:launchMode="singleTop"
...>
...
</activity>
I am getting and error while uploading an image and storing data to Firebase. I am using Bitmap to display the images. After submitting the data the app crashes and returns to the previous Activity. Also, when I pick an image from the device it is not displaying in the ImageView.
My error:
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.bloodsavelife, PID: 6642
java.lang.IllegalArgumentException: uri cannot be null
at com.google.android.gms.common.internal.Preconditions.checkArgument(com.google.android.gms:play-services-basement##17.2.1:35)
at com.google.firebase.storage.StorageReference.putFile(StorageReference.java:238)
at com.example.bloodsavelife.Activities.MakeRequest.uploadToFirebase(MakeRequest.java:153)
at com.example.bloodsavelife.Activities.MakeRequest.access$000(MakeRequest.java:47)
at com.example.bloodsavelife.Activities.MakeRequest$2.onClick(MakeRequest.java:121)
at android.view.View.performClick(View.java:7125)
at android.view.View.performClickInternal(View.java:7102)
at android.view.View.access$3500(View.java:801)
at android.view.View$PerformClick.run(View.java:27336)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930) I/Process: Sending signal. PID: 6642 SIG: 9
XML file:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Activities.MakeRequest">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="18dp"
android:text="Write your message and add an image for the community, somebody will
defintely help you if possible"
android:textColor="#android:color/black"
android:textSize="24sp"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:orientation="horizontal">
<ImageView
android:id="#+id/post_image"
android:layout_width="192dp"
android:layout_height="150dp"
android:padding="8dp"
android:src="#drawable/ic_launcher_background_image" />
<Button
android:id="#+id/browse"
android:layout_width="141dp"
android:layout_height="57dp"
android:layout_marginLeft="50dp"
android:layout_marginTop="60dp"
android:background="#drawable/button_bg"
android:gravity="center"
android:text="Browse"
android:textAlignment="gravity"
android:textColor="#color/colorPrimary"
android:textSize="24sp"
android:textStyle="bold" />
</LinearLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:background="#drawable/border_background">
<EditText
android:id="#+id/message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#null"
android:cursorVisible="true"
android:gravity="top"
android:hint="Message to donors and mention for what purpose blood needed Include your
contact and location here."
android:maxLines="15"
android:minLines="7"
android:padding="10dp"
android:textAlignment="gravity"
android:textColor="#android:color/black"
android:textColorHint="#color/DarkGreen"
android:textSize="15sp"
android:textStyle="bold" />
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/bloodgroup"
style="#style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.ExposedDropdownMenu"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="20dp"
android:layout_marginEnd="10dp"
android:hint="Required Blood Group"
android:inputType="text"
android:textColor="#android:color/black"
android:textSize="20sp"
app:boxBackgroundMode="outline"
app:endIconMode="dropdown_menu">
<AutoCompleteTextView
android:id="#+id/dropdown_text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</com.google.android.material.textfield.TextInputLayout>
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/quantity"
style="#style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="20dp"
android:layout_marginEnd="10dp"
android:hint="Quantity Needed(in ml)"
android:inputType="text"
android:textColor="#android:color/black"
android:textSize="20sp"
app:boxBackgroundMode="outline"
app:endIconMode="clear_text">
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text" />
</com.google.android.material.textfield.TextInputLayout>
</LinearLayout>
<Button
android:id="#+id/btn_post"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="30dp"
android:background="#drawable/button_bg"
android:text="Post Request"
android:textAllCaps="false"
android:textColor="#android:color/white"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</ScrollView>
Java code:
public class MakeRequest extends AppCompatActivity {
EditText message;
TextInputLayout bloodgroup, quantity;
TextView title;
ImageView image;
Uri filepath;
Bitmap bitmap;
Button postReq, browse;
private AutoCompleteTextView dropDownText;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_make_request);
message = findViewById(R.id.message);
bloodgroup = findViewById(R.id.bloodgroup);
quantity = findViewById(R.id.quantity);
browse = findViewById(R.id.browse);
title = findViewById(R.id.title);
image = findViewById(R.id.image);
postReq = findViewById(R.id.btn_post);
dropDownText = findViewById(R.id.dropdown_text);
String[] item = new String[]{
"A+Ve",
"A-Ve",
"B+Ve",
"B-Ve",
"AB+Ve",
"AB-Ve",
"O+Ve",
"O-Ve"
};
ArrayAdapter<String> adapter = new ArrayAdapter<>(
MakeRequest.this,
R.layout.dropdown_item,
item
);
dropDownText.setAdapter(adapter);
browse.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Dexter.withActivity(MakeRequest.this)
.withPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
.withListener(new PermissionListener() {
#Override
public void onPermissionGranted(PermissionGrantedResponse response) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(Intent.createChooser(intent, "select image"), 1);
}
#Override
public void onPermissionDenied(PermissionDeniedResponse response) {
}
#Override
public void onPermissionRationaleShouldBeShown(PermissionRequest permission,
PermissionToken token) {
token.continuePermissionRequest();
}
}).check();
}
});
postReq.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
uploadToFirebase();
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
if (requestCode == 1 && requestCode == RESULT_OK) {
filepath = data.getData();
try {
InputStream inputStream = getContentResolver().openInputStream(filepath);
bitmap = BitmapFactory.decodeStream(inputStream);
image.setImageBitmap(bitmap);
} catch (Exception ex) {
}
}
super.onActivityResult(requestCode, resultCode, data);
}
private void uploadToFirebase() {
ProgressDialog dialog = new ProgressDialog(this);
dialog.setTitle("File Uploader");
dialog.show();
enter code here
message = findViewById(R.id.message);
bloodgroup = findViewById(R.id.bloodgroup);
quantity = findViewById(R.id.quantity);
FirebaseStorage storage = FirebaseStorage.getInstance();
//need improvement by using date and time instead of random method.
StorageReference uploader = storage.getReference("Image1" + new Random().nextInt(100));
uploader.putFile(filepath)
.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
uploader.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
#Override
public void onSuccess(Uri uri) {
dialog.dismiss();
FirebaseDatabase db = FirebaseDatabase.getInstance();
DatabaseReference root = db.getReference("RequestPost");
RequestHelper obj = new RequestHelper(message.getText().toString(),
bloodgroup.getEditText().getText().toString(), quantity.getEditText().getText().toString(),
uri.toString());
root.child(bloodgroup.getEditText().getText().toString()).setValue(obj);
message.setText("");
bloodgroup.getEditText().setText("");
quantity.getEditText().setText("");
image.setImageResource(R.drawable.ic_image_black_24dp);
Toast.makeText(getApplicationContext(), "Uploaded",
Toast.LENGTH_LONG).show();
}
});
}
})
.addOnProgressListener(snapshot -> {
float percent = (100 * snapshot.getBytesTransferred()) /
snapshot.getTotalByteCount();
dialog.setMessage("Uploaded:" + (int) percent + "%");
});
}
Try with this code
Pick an image from gallery
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT)
startActivityForResult(intent, 1001);
onActivityforresult get Uri
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data){
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1001 && requestCode == RESULT_OK) {
filepath = data.getData();
try {
InputStream inputStream = getContentResolver().openInputStream(filepath);
bitmap = BitmapFactory.decodeStream(inputStream);
image.setImageBitmap(bitmap);
} catch (Exception ex) {
// You can catch the exception here
}
}
}
i want to add picture in an image view with the text veiw in one line. this code is opening the gallery and let me select a picture. but when the picture is selected the picture is then not showed in the image veiw. i took the code from this link
[Image browse button in android activity
here is my code
image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
and
#Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null
!= data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.image);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}
and here is the xml
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:padding="1dp"
android:background="#color/Black"
android:layout_marginTop="10dp"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:id="#+id/image"
android:layout_weight="0.5"
/>
<TextView
android:layout_marginTop="10dp"
android:text="TextView"
android:layout_width="match_parent"
android:singleLine="true"
android:layout_gravity="right"
android:background="#color/White"
android:layout_height="wrap_content"
android:id="#+id/child"
android:textSize="24sp"/>
</LinearLayout>
I think you forget permission read external storage.
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 5 years ago.
I can not understand why my application does not open a new activity on a button click.I have a button in my layout file(id is showButton),I need to open another activity when I click on that button.But it does not work and my application will crash.therefore I added a try catch block and get the android monitor result as following.
activity_place_picker.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context=".PlacePickerActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView"
android:layout_alignParentTop="true"
android:layout_marginTop="20dp"
android:layout_centerHorizontal="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView2"
android:layout_below="#+id/textView"
android:layout_centerHorizontal="true"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Launch Places API Picker"
android:id="#+id/pickerButton"
android:layout_below="#+id/textView2"
android:layout_centerHorizontal="true"
android:layout_marginTop="50dp"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add to Place Holder"
android:id="#+id/saveButton"
android:layout_below="#+id/pickerButton"
android:layout_centerHorizontal="true"
android:visibility="gone"
android:layout_marginTop="20dp"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Place Holder"
android:id="#+id/showButton"
android:layout_below="#+id/saveButton"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView3"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/textView3"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:id="#+id/poweredBy"
android:src="#drawable/powered_by_google_light"/>
This is Place picker class where I have included the onClick listner to the button to open a new activity.
PlacePickerActivity
public class PlacePickerActivity extends AppCompatActivity {
private static final int PLACE_PICKER_REQUEST = 1;
private TextView mName;
private TextView mAddress;
private TextView mAttributions;
private static final LatLngBounds BOUNDS_MOUNTAIN_VIEW = new LatLngBounds(
new LatLng(37.398160, -122.180831), new LatLng(37.430610, -121.972090));
Context ctx;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_place_picker);
mName = (TextView) findViewById(R.id.textView);
mAddress = (TextView) findViewById(R.id.textView2);
mAttributions = (TextView) findViewById(R.id.textView3);
Button showButton = (Button) findViewById(R.id.showButton);
Button pickerButton = (Button) findViewById(R.id.pickerButton);
pickerButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
try {
PlacePicker.IntentBuilder intentBuilder =
new PlacePicker.IntentBuilder();
intentBuilder.setLatLngBounds(BOUNDS_MOUNTAIN_VIEW);
Intent intent = intentBuilder.build(PlacePickerActivity.this);
startActivityForResult(intent, PLACE_PICKER_REQUEST);
} catch (GooglePlayServicesRepairableException
| GooglePlayServicesNotAvailableException e) {
e.printStackTrace();
}
}
});
showButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
try {
Intent i = new Intent(ctx, PlacesActivity.class);
ctx.startActivity(i);
}catch (Exception e){
e.printStackTrace();
}
}
});
}
#Override
protected void onActivityResult(int requestCode,
int resultCode, Intent data) {
if (requestCode == PLACE_PICKER_REQUEST
&& resultCode == Activity.RESULT_OK) {
//Extracting place information from the API
final Place place = PlacePicker.getPlace(this, data);
final String place_Id = place.getId().toString();
final String place_Name = place.getName().toString();
final String place_Address = place.getAddress().toString();
final String place_PhoneNumber = place.getPhoneNumber().toString();
final String place_Website = place.getWebsiteUri().toString();
//Get rating as a float value and converting to string
final float rating = place.getRating();
final String place_Rating = String.valueOf(rating);
final String place_LatLng = place.getLatLng().toString();
final String function_Save = "save_Place";
final String function_Show = "show_Place";
String attributions = (String) place.getAttributions();
if (attributions == null) {
attributions = "";
}
mName.setText(place_Name);
mAddress.setText(place_Address);
mAttributions.setText(Html.fromHtml(attributions));
//Accessing the save button and show button in the view and making it visible after selecting a place
final View save = findViewById(R.id.saveButton);
save.setVisibility(View.VISIBLE);
//Passing the Extracted place details to the background worker class
save.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
BackgroundWorker backgroundWorker = new BackgroundWorker(PlacePickerActivity.this);
backgroundWorker.execute(function_Save,place_Id,place_Name,place_Address,place_PhoneNumber,place_Website,place_Rating,place_LatLng);
}
});
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
}
PlacesActivity.java
package com.truiton.placepicker;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class PlacesActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_places);
}
}
activity_places.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.truiton.placepicker.PlacesActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello world"
android:id="#+id/textView" />
</RelativeLayout>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.truiton.placepicker">
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme">
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="AIzaSyBpIGvJfE8eKhoEFCMqV8NrFkWRjTAnNyQ" />
<activity
android:name=".PlacePickerActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".PlacesActivity"></activity>
</application>
</manifest>
Android Monitor result when the button clicks
Android Monitor result
Edited : This is the crash log
Crash log
can anyone help me with this?
Write the class name PlacePickerActivity in the intent, your method should be
showButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
try {
Intent i = new Intent(PlacePickerActivity.this , PlacesActivity.class);
ctx.startActivity(i);
}catch (Exception e){
e.printStackTrace();
}
}
});
I found the answer for the question.
This
link helped me to find the answer for the problem. In PlacePickerActivity I have just declare Context ctx;and it does not contain any primitive value. But I have use the it as an argument to open a new activity which will give me a NullPointerException.So instead of
showButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
Intent i = new Intent(ctx, PlacesActivity.class);
ctx.startActivity(i);
}
});
I used
showButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
Intent i = new Intent(PlacePickerActivity.this, PlacesActivity.class);
PlacePickerActivity.this.startActivity(i);
}
});
And this fixed my problem.Thank you for every one.