Android筆記——判斷程式是否第一次啟動

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 1 public class Welcome extends Activity { 2     private final long SPLASH_LENGTH = 2000; 3     Handler handler = new Handler(); 4  5     public void onCreate(Bundle savedInstanceState) { 6         super.onCreate(savedInstanceState); 7         setContentView(R.layout.farst_img); 8          9         //定義一個setting記錄APP是幾次啟動！！！10         SharedPreferences setting = getSharedPreferences("com.example.hr_jie", 0);11         Boolean user_first = setting.getBoolean("FIRST", true);12         if (user_first) {// 第一次則跳轉到歡迎頁面13             setting.edit().putBoolean("FIRST", false).commit();14             tiaozhuanzhu();15         } else {//如果是第二次啟動則直接跳轉到首頁面16             tiaozhuanfu();17         }18     }19     20     public void tiaozhuanzhu(){ 21     handler.postDelayed(new Runnable() {  //使用handler的postDelayed實現延時跳轉  22          23             public void run() {    24                 Intent intent = new Intent(Welcome.this, Welcome_four.class);    25                 startActivity(intent);    26                 finish();       27             }    28         }, SPLASH_LENGTH);//2秒後跳轉至應用主介面MainActivity  29 }30     31     public void tiaozhuanfu(){ 32     handler.postDelayed(new Runnable() {//使用handler的postDelayed實現延時跳轉  33          34             public void run() {    35                 Intent intent = new Intent(Welcome.this, MainActivity.class);    36                 startActivity(intent);    37                 finish();       38             }    39         }, SPLASH_LENGTH);//2秒後跳轉至應用歡迎介面40 }41 }

 

Android筆記——判斷程式是否第一次啟動