MainActivity.java 文件源码

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
    if (prefs.getString("weather", null) != null) {
        Intent intent = new Intent(this, WeatherActivity.class);
        startActivity(intent);
        finish();
    }
}