Android view 資料緩衝

標籤：

Android中經常需要用到view資料的緩衝，比如我們希望EditText 在被切到別的介面的時候，輸入的資料要仍保持不變。

參考代碼：

/*   緩衝textview */public class CPComplexDatePicker extends FrameLayout {    private Context mContext;    /**     * 日期展示     */    private TextView mExpireTxt;    /**     * 選中的日期     */    private String mSelectedDate;    /**     * 布局     */    private View mContentView;    public CPComplexDatePicker(Context context) {        super(context);        mContext = context;        init();    }    public CPComplexDatePicker(Context context, AttributeSet attrs) {        super(context, attrs);        mContext = context;        init();    }    /**     * 設定日期     *      * @param text     */    public void setText(String text) {        if (mExpireTxt != null) {            mExpireTxt.setText(text);        }    }    @SuppressLint("InflateParams")    private void init() {        mContentView = LayoutInflater.from(mContext).inflate(                R.layout.realname_complex_date_picker,                (ViewGroup) getRootView());        mExpireTxt = (TextView) mContentView                .findViewById(R.id.pid_card_expire_txt);    }    /**     * 儲存     */    @Override    public Parcelable onSaveInstanceState() {        Parcelable parcelable = super.onSaveInstanceState();        SavedState ss = new SavedState(parcelable);        ss.mCacheDate = mSelectedDate;        return ss;    }    /**     * 恢複     */    @Override    public void onRestoreInstanceState(Parcelable state) {        SavedState ss = (SavedState) state;        mSelectedDate = ss.mCacheDate;        // 恢複常值內容        setText(ss.mCacheDate);        super.onRestoreInstanceState(ss.getSuperState());    }    /**     * 資料恢複     *      * @author wangmingxian     *      */    public static class SavedState extends BaseSavedState {        /**         * 緩衝日期         */        String mCacheDate;        SavedState(Parcelable superState) {            super(superState);        }        @Override        public void writeToParcel(Parcel out, int flags) {            super.writeToParcel(out, flags);            out.writeString(mCacheDate);        }        private SavedState(Parcel in) {            super(in);            mCacheDate = in.readString();        }        public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() {            public SavedState createFromParcel(Parcel in) {                return new SavedState(in);            }            public SavedState[] newArray(int size) {                return new SavedState[size];            }        };    }}

 

Android view 資料緩衝