android - 암시적 인텐트

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/btnDial"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="전화걸기" />
    <Button
        android:id="@+id/btnWeb"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="홈페이지 열기" />
    <Button
        android:id="@+id/btnGoogle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="구글 맵 열기" />
    <Button
        android:id="@+id/btnSearch"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="구글 검색하기" />
    <Button
        android:id="@+id/btnSms"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="문자 보내기" />
    <Button
        android:id="@+id/btnPhoto"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="사진 보기" />

</LinearLayout>

package com.example.it.myapplication8_6;

import android.app.SearchManager;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import java.io.File;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("암시적 인텐트 예제");

        Button btnDial = (Button) findViewById(R.id.btnDial);
        Button btnWeb = (Button) findViewById(R.id.btnWeb);
        Button btnGoogle = (Button) findViewById(R.id.btnGoogle);
        Button btnSearch = (Button) findViewById(R.id.btnSearch);
        Button btnSms = (Button) findViewById(R.id.btnSms);
        Button btnPhoto = (Button) findViewById(R.id.btnPhoto);

        btnDial.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri = Uri.parse("tel:010-1234-5678");
                Intent intent = new Intent(Intent.ACTION_DIAL, uri);
                startActivity(intent);
            }
        });

        btnWeb.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri = Uri.parse("http://www.hanb.co.kr");
                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                startActivity(intent);
            }
        });

        btnGoogle.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri = Uri.parse("geo:37.5543, 126.9135");
                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                startActivity(intent);
            }
        });
         btnSearch.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
                 intent.putExtra(SearchManager.QUERY, "안드로이드");
                 startActivity(intent);
             }
         });
         btnSms.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 Intent intent = new Intent(Intent.ACTION_VIEW);
                 intent.putExtra("sms_body", "안녕하세요?");
                 intent.setType("vnd.android-dir/mms-sms");
                 startActivity(intent);
             }
         });
        btnPhoto.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(Intent.ACTION_VIEW);
                Uri uri = Uri.fromFile(new File("/sdcard/jeju13.jpg"));
                intent.setDataAndType(uri, "image/jpeg");
                startActivity(intent);
            }
        });

    }
}