Java Android活动生命周期
关闭Java Android活动生命周期,java,android,android-activity,Java,Android,Android Activity,关闭活动后,我需要保存过滤器。我正在使用onSaveInstanceState()来实现它 protected void onSaveInstanceState(Bundle savedInstanceState) { super.onSaveInstanceState(savedInstanceState); savedInstanceState.putInt("age", sbAge.getProgress()); savedInstanceState.putInt(
活动
后,我需要保存过滤器。我正在使用onSaveInstanceState()
来实现它
protected void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
savedInstanceState.putInt("age", sbAge.getProgress());
savedInstanceState.putInt("age", spMyStatus.getSelectedItemPosition());
if(rbMaleMe.isChecked())
savedInstanceState.putInt("sex", 1);
else if(rbFemaleMe.isChecked())
savedInstanceState.putInt("sex", 2);
}
`
在onRestoreInstanceState()方法中:
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
sbAge.setProgress(savedInstanceState.getInt("age"));
spMyStatus.setSelection(savedInstanceState.getInt("status"));
if(savedInstanceState.getInt("sex") == 1)
rbMaleMe.isChecked();
else if (savedInstanceState.getInt("sex") == 2)
rbFemaleMe.isChecked();
}
if (savedInstanceState != null)
{
savedInstanceState.getInt("age");
savedInstanceState.getInt("sex");
savedInstanceState.getInt("status");
}
在onCreate()
方法中:
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
sbAge.setProgress(savedInstanceState.getInt("age"));
spMyStatus.setSelection(savedInstanceState.getInt("status"));
if(savedInstanceState.getInt("sex") == 1)
rbMaleMe.isChecked();
else if (savedInstanceState.getInt("sex") == 2)
rbFemaleMe.isChecked();
}
if (savedInstanceState != null)
{
savedInstanceState.getInt("age");
savedInstanceState.getInt("sex");
savedInstanceState.getInt("status");
}
但它不起作用。
当我关闭并重新启动活动时,只显示空视图
onClick()
:
当操作系统终止您的活动时,会调用onSaveInstanceState()
(例如回收资源)。当您显式调用finish()
时,将不会调用它
如果您仍然希望保持您的价值观,可以使用
(在旁注中,不要显式调用onStop()
)