intent camera gallery

package com.naver.intentexample;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.provider.ContactsContract;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import java.io.Console;

public class MainActivity extends AppCompatActivity {
    Button btn1;
    Button btn2;
    Button btn3;
    Button btn4;
    Button btn5;

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

        //버튼 찾기
        btn1=(Button)findViewById(R.id.button);
        //이벤트처리
        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse("http://m.naver.com"));
                startActivity(intent); // intent를 이용해서 새 액티비티를 실행함.
            }
        });

        //버튼찾기
        btn2=(Button)findViewById(R.id.button2);
        //이벤트처리
        btn2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse("tel:/010-1111-2222"));
                startActivity(intent); // intent를 이용해서 새 액티비티를 실행함.

            }
        });

        //버튼찾기
        btn3=(Button)findViewById(R.id.button3);
        btn3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse("content://media/internal/images/media"));
                startActivity(intent); // intent를 이용해서 새 액티비티를 실행함.
            }
        });

        //버튼찾기
        btn4=(Button)findViewById(R.id.button4);
        btn4.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_VIEW);
                intent.setData(ContactsContract.Contacts.CONTENT_URI);
                startActivity(intent);
            }
        });


        //버튼찾기
        btn5=(Button)findViewById(R.id.button5);
        btn5.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
  //              intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//                startActivity(intent);

                //액티비티를 시작시킨후 결과를 받는다.
                startActivityForResult(intent, 1);

            }
        });

    }

    //Result가 넘어오면 자동으로 호출됨. Callback.
    protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
        super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
        System.out.println(resultCode);
        System.out.println(requestCode);

        switch(requestCode) {
            case 0:
                if(resultCode == RESULT_OK){
                    System.out.println(RESULT_OK);
                    Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse("content://media/internal/images/media"));
                    startActivity(intent); // intent를 이용해서 새 액티비티를 실행함.
                }

                break;
            case 1:
                if(resultCode == RESULT_OK){
                    System.out.println(RESULT_OK);
                    Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse("content://media/internal/images/media"));
                    startActivity(intent); // intent를 이용해서 새 액티비티를 실행함.
                }
                break;
        }
    }
}