1
所以我有一個奇怪的問題onSaveInstanceState和onRestoreInstanceState。 以下是我到目前爲止所做的工作,並且完美地工作。通常稱爲方法,值保存並恢復正常。Android onRestoreInstanceState覆蓋值
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
// Always call the superclass so it can restore the view hierarchy
super.onRestoreInstanceState(savedInstanceState);
// Restore value of members from saved state
mRawImgPath = savedInstanceState.getString(SAVE_STATE_RAW_IMG_PATH);
mProImgPath = savedInstanceState.getString(SAVE_STATE_PRO_IMG_PATH);
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
// Always call the superclass so it can save the view hierarchy state
super.onSaveInstanceState(savedInstanceState);
// Save the user's current game state
savedInstanceState.putString(SAVE_STATE_RAW_IMG_PATH, mRawImgPath);
savedInstanceState.putString(SAVE_STATE_PRO_IMG_PATH, mProImgPath);
}
現在我想提高代碼位與第三值我希望保存。
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
// Always call the superclass so it can restore the view hierarchy
super.onRestoreInstanceState(savedInstanceState);
// Restore value of members from saved state
mRawImgPath = savedInstanceState.getString(SAVE_STATE_RAW_IMG_PATH);
mProImgPath = savedInstanceState.getString(SAVE_STATE_PRO_IMG_PATH);
mLastState = savedInstanceState.getString(SAVE_STATE_LAST_STATE);
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
// Always call the superclass so it can save the view hierarchy state
super.onSaveInstanceState(savedInstanceState);
// Save the user's current game state
savedInstanceState.putString(SAVE_STATE_RAW_IMG_PATH, mRawImgPath);
savedInstanceState.putString(SAVE_STATE_PRO_IMG_PATH, mProImgPath);
savedInstanceState.putString(SAVE_STATE_LAST_STATE, mLastState);
}
該方法仍然被調用完美,但它不會恢復正確的值了。 而不是將正確的值恢復到正確的變量,我得到SAVE_STATE_LAST_STATE
恢復到所有三個變量(mRawImgPath
,mProImgPath
和mLastState
)。
我可以說的是,他們在保存在onSaveInstanceState()
時具有正確的值,因此在保存時不會有錯誤的值。此外,我不會更改onCreate()
的值,否則第一個解決方案(只有兩個變量)將無法正常工作。 我真的不知道那裏發生了什麼。
如果感興趣,這裏的聲明:
// Vars
GPSTracker gps;
String mRawImgPath = ""; // Path of the raw image
String mProImgPath = ""; // Path of the processed image
String mLastState = "";
// Save state variables
static final String SAVE_STATE_RAW_IMG_PATH = "";
static final String SAVE_STATE_PRO_IMG_PATH = "";
static final String SAVE_STATE_LAST_STATE = "";
任何幫助表示讚賞。
*蕩*美麗。我不記得我必須聲明變量的名稱爲值。非常感謝。 – user3207296
不客氣:) – isah