Ocak 12, 2020
StartActivityForResult kullanımı ve Kameradan Fotoğraf Alma ve Rehberden Telefon no Alma
Bilindiği gibi intent’leri aktiviteler arası dolaşırken yada herhangi bir intent’i çalıştırıp sonucunda data almak için kullanabiliyoruz. Bu uygulamada Aktivitemizi sonucunda bir data almak üzere çalıştıracağız. Bunu da “StartActivityForResult” ile yapacağız. Resimlerdeki gibi bir ekran görüntümüz olacak .
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<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <ImageView android:id="@+id/imageView1" android:layout_width="match_parent" android:layout_height="550dp" android:padding="0dp" android:src="@drawable/ic_launcher_background"> </ImageView> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:text="Fotograf Çek"> </Button> </LinearLayout> |
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package com.vsofttech.languageapp; import android.Manifest; import android.app.Activity; import android.content.Intent; import android.content.pm.PackageManager; import android.graphics.Bitmap; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast; import androidx.annotation.NonNull; public class MainActivity extends Activity { private static final int CAMERA_REQUEST = 1888; private ImageView imageView; private static final int MY_CAMERA_PERMISSION_CODE = 100; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); this.imageView = (ImageView)this.findViewById(R.id.imageView1); Button photoButton = (Button) this.findViewById(R.id.button1); photoButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) { requestPermissions(new String[]{Manifest.permission.CAMERA}, MY_CAMERA_PERMISSION_CODE); } else { Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(cameraIntent, CAMERA_REQUEST); } } }); } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); if (requestCode == MY_CAMERA_PERMISSION_CODE) { if (grantResults[0] == PackageManager.PERMISSION_GRANTED) { Toast.makeText(this, "camera permission granted", Toast.LENGTH_LONG).show(); Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(cameraIntent, CAMERA_REQUEST); } else { Toast.makeText(this, "camera permission denied", Toast.LENGTH_LONG).show(); } } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == CAMERA_REQUEST && resultCode == Activity.RESULT_OK) { Bitmap photo = (Bitmap) data.getExtras().get("data"); imageView.setImageBitmap(photo); } } } |
Rehbere erişim yapıp istenen bir kaydı ekrana getiriyoruz. Manifest’de izin almayı unutmayın .
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<uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission> |
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package com.vsofttech.myapplication; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.appcompat.app.AppCompatActivity; import androidx.core.app.ActivityCompat; import androidx.core.content.ContextCompat; import android.Manifest; import android.content.Intent; import android.content.pm.PackageManager; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.provider.ContactsContract; import android.view.View; import android.widget.Button; import android.widget.TextView; import java.security.Permission; public class MainActivity extends AppCompatActivity { Button contactButton; TextView textViewName,textViewNumber; static final int PICK_REQUEST=15; static final int CONTANCT_PERMISSION_CODE=10; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); contactButton=findViewById(R.id.contacts); textViewName=findViewById(R.id.tvName); textViewNumber=findViewById(R.id.tvNumber); contactButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_CONTACTS)!= PackageManager.PERMISSION_GRANTED) { // Eğer ReadContact izni alınmamışsa ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_CONTACTS}, CONTANCT_PERMISSION_CODE); } else { Intent intent=new Intent(Intent.ACTION_PICK, ContactsContract.CommonDataKinds.Phone.CONTENT_URI); startActivityForResult(intent,PICK_REQUEST); } } }); } // izin işleminin sonucunu değerlendirelim. @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); if(requestCode==CONTANCT_PERMISSION_CODE){ if(grantResults[0]==PackageManager.PERMISSION_GRANTED){ System.out.println(" Kişilere Erişim İzni Verildi "); } } } // result Activity için dönen değeri alalım. @Override protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { super.onActivityResult(requestCode, resultCode, data); if(requestCode==PICK_REQUEST){ String phoneNumber; String name; Uri uri=data.getData(); Cursor cursor=getContentResolver().query(uri,null,null,null,null); cursor.moveToFirst(); int phoneIndex=cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER); int nameIndex=cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME); phoneNumber=cursor.getString(phoneIndex); name=cursor.getString(nameIndex); textViewNumber.setText(phoneNumber); textViewName.setText(name); } } } |
detaylı kaynak: https://developer.android.com/training/basics/intents/result
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