안드로이드 코드 스니펫 | 예제

인터넷 허용 권한 추가시

<uses-permission android:name="android.permission.INTERNET" />

액티비티 추가시

<activity abdroid:name=".addedActivity">

 

이벤트 등록 방법 5가지 //1.익명class 2.익명 switch 3.리스너클라스_구현 4.MainActivity를 리스너class_구현5.xml_onlick

이벤트 등록 ,다른 액티비티에 인텐트 전달  

//nameofActivity 
	Button b = (Button)findViewById(R.id.button1);
    b.setOnClickListener(new View.OnClickListener() {
    @Override
    	public void onClick(View view) {
        Handmadeclass iamclass =new Handmadeclass();   //보낼 클래스 선언
        String[] array = {"홍길순","김춘추","김유신"}; //보낼 배열
        
        Intent intent = new Intent(nameofActivity.this,SubActivity.class); // (현재class,보낼 class)
        
        //(보내는 메시지 이름,내용)
        intent.putExtra("nameOfMessage","data");//String
        intent.putExtra("class",iamclass);      //class //Serializable구현된 class
        intent.putExtra("array",array);			//배열[]
        intent.putExtra("thisisint",5);			//int
        
        startActivity(intent); // 
        }
    });
//SubActivity
        TextView tx1 = (TextView)findViewById(R.id.textView1); /*TextView선언*/
        TextView tx2 = (TextView)findViewById(R.id.textView2);
        TextView tx3 = (TextView)findViewById(R.id.textView3);
        TextView tx4 = (TextView)findViewById(R.id.textView4);
        TextView tx5 = (TextView)findViewById(R.id.textView5);

        Intent intent = getIntent(); /*데이터 수신*/

        String name = intent.getExtras().getString("name"); /*String형*/
        int age = intent.getExtras().getInt("age"); /*int형*/
        String array[] = intent.getExtras().getStringArray("array"); /*배열*/
        Option option = (Option)intent.getSerializableExtra("class"); /*클래스*/
        
        tx1.setText(name);      
        tx2.setText(String.valueOf(age));
        tx4.setText(option.getPhone());
        tx5.setText(option.getAddr());
        
        String add_array="";
        for(int i=0;i<array.length;i++){
            add_array+=array[i]+",";
        }
        tx3.setText(add_array);

이벤트 등록 //switch 문 이용

    Button button1;
    Button button2;
    Button button3;
    SearchView searchView;
    Toast  toast;

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

        button1     =(Button)      findViewById(R.id.button1);
        button2     =(Button)      findViewById(R.id.button2);
        button3     =(Button)      findViewById(R.id.button3);
        searchView  =(SearchView)  findViewById(R.id.searchView);
        toast       =Toast.makeText(this.getApplicationContext(),"",Toast.LENGTH_LONG);
        button1.setOnClickListener(clickListener);
        button2.setOnClickListener(clickListener);
        button3.setOnClickListener(clickListener);

    }
    View.OnClickListener clickListener =new View.OnClickListener(){
        @Override
        public void onClick(View v) {
            switch (v.getId()){
            case R.id.button3 :
//                    Intent intent = new Intent(MainActivity.this, webview.class);
//                    intent.putExtra(dataName, String.valueOf(editText.getText()));
//                    startActivity(intent);
                toast.setText("this is for testing of hct");
                toast.show();
                break;
        }
    }
    };

Toast 사용

Toast myToast =Toast.makeText(this.getApplicationContext(),"data context",Toast.LENGTH_SHORT);

myToast.show();

myToast.cancel();

리스트뷰 구현

https://lktprogrammer.tistory.com/163

Jsoup을 이용한 web parsing

https://m.blog.naver.com/hwa2ting3612/221471745071

네이버 상영중인 영화 불러오기 with image( Jsoup+Glide +listView)

https://m.blog.naver.com/cosmosjs/221294678259