Question

朋友我正在使用意图从一个活动导航到另一个活动。导航过程如何花费大约一分钟。请查找日志

08-21 18:01:32.719: I/System.out(4636): Button has been clicked
08-21 18:02:32.999: I/System.out(4636): successfull navigation

代码：

public void onClick(View v) {
if(v==refreshButton)
{
    System.out.println("Button has been clicked");
    startActivity(new Intent(this,Refresh.class));
}

请同样帮助我。我试过清理项目并重新启动了智能手机。

刷新课程

public class RefreshSettings extends Activity implements android.view.View.OnClickListener
{

    Button refresh;
    EditText code;
    String pinCode;
    TelephonyManager telephonyManager;
     String imei;
    @Override
    protected void onSaveInstanceState(Bundle outState) {
        System.out.println("successfull navigation");
        super.onSaveInstanceState(outState);
        setContentView(R.layout.refresh_settings);


        telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
        imei=telephonyManager.getDeviceId();

        refresh=(Button)findViewById(R.id.button_Refresh_Settings);
        refresh.setOnClickListener(this);

        code=(EditText)findViewById(R.id.edittext_Refresh_Code);
    }
}

Answer 1

将onSaveInstanceState()更改为onCreate()。

从文档中我了解到应该调用onSaveInstanceState（）来仅存储临时信息，

protected void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    System.out.println("successfull navigation");
    setContentView(R.layout.refresh_settings);


    telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
    imei=telephonyManager.getDeviceId();

    refresh=(Button)findViewById(R.id.button_Refresh_Settings);
    refresh.setOnClickListener(this);

    code=(EditText)findViewById(R.id.edittext_Refresh_Code);

}

活动导航需要花费大量时间

1 个答案: