Question

我需要保存textview属性，例如文本，颜色，背景颜色，填充值onSaveInstanceState() -

textview time位于Adapter类的bindView()中 -

viewHolder.time.setText(strText);
viewHolder.time.setTextColor(0xff000000);
viewHolder.time.setTextSize(17);
viewHolder.time.setVisibility(View.VISIBLE);
viewHolder.time.setBackgroundColor(nColor);
viewHolder.time.setPadding(25,25,25,25);

如何在onSaveInstanceState()中保存它们，并在方向更改为横向时在onCreate()中使用它。

我不想使用android:configChanges因为我有不同的横向布局。

编辑：

在MyAdapter.java中，

@Override
    public void bindView(View view, Context context, Cursor cursor) {
        ViewHolder viewHolder = (ViewHolder) view.getTag();
        Child child = children.createStopFromCursor(cursor);
        MyFragment ndf = new MyFragment();   
                    viewHolder.time.setText(strText);
                    viewHolder.time.setTextColor(0xff000000);
                    viewHolder.time.setTextSize(17);
                    viewHolder.time.setVisibility(View.VISIBLE);
                    viewHolder.time.setBackgroundColor(nColor);
                    viewHolder.time.setPadding(25,25,25,25);
                    ndf.setLandScape(strText,0xff000000,17,nColor);
                    view.invalidate();
        }
    }

在MyFragment.java中，

public void setLandScape(String time,int time_color,int time_size,int time_Bcolor){
        this.delay_time = time;
        this.delay_time_color = time_color;
        this.delay_time_size = time_size;
        this.delay_time_BColor = time_Bcolor;
      }

@Override
    public void onSaveInstanceState(Bundle outState) {
        int[] padding = {25,25,25,25};
        TextViewLandscape attributes = new TextViewLandscape(delay_time, delay_time_color, delay_time_size, delay_time_BColor, padding);
        ArrayList<TextViewLandscape> list = new ArrayList<TextViewLandscape>();
        list.add(attributes);
        outState.putParcelableArrayList("keyTextViewAttributes", list);
        super.onSaveInstanceState(outState);
    }

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (savedInstanceState != null) {
            mFromSavedInstanceState = true;
            TextViewLandscape textViewAttributes = savedInstanceState.getParcelable("keyTextViewAttributes");
        }}

在TextViewLandscape.java中，

public class TextViewLandscape implements Parcelable {
    private String text;
    private int textColor;
    private int textSize;
    private int backgroundColor;
    private int[] paddingAttrs = {4};

    public TextViewLandscape(String text, int textColor, int textSize, int backgroundColor, int[] paddingAttrs) {
        this.text = text;
        this.textColor = textColor;
        this.textSize = textSize;
        this.backgroundColor = backgroundColor;
        this.paddingAttrs = paddingAttrs;
    }

    public TextViewLandscape(Parcel in) {
        text = in.readString();
        textColor = in.readInt();
        textSize = in.readInt();
        backgroundColor = in.readInt();
        paddingAttrs = in.createIntArray();
    }

    public static final Creator<TextViewLandscape> CREATOR = new Creator<TextViewLandscape>() {
        @Override
        public TextViewLandscape createFromParcel(Parcel in) {
            return new TextViewLandscape(in);
        }

        @Override
        public TextViewLandscape[] newArray(int size) {
            return new TextViewLandscape[size];
        }
    };

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(text);
        dest.writeInt(textColor);
        dest.writeInt(textSize);
        dest.writeInt(backgroundColor);
        dest.writeIntArray(paddingAttrs);
    }
}

仍未在横向模式下工作....

Answer 1

在这种情况下，您必须定义一些Parcelable类，它保留所有TextView属性，例如：

 public class TextViewAttributes implements Parcelable {
    private String text;
    private int textColor;
    private int textSize;
    private int visibility;
    private int backgroundColor;
    private int[] paddingAttrs = {4};

    public TextViewAttributes(String text, int textColor, int textSize, int visibility, int backgroundColor, int[] paddingAttrs) {
        this.text = text;
        this.textColor = textColor;
        this.textSize = textSize;
        this.visibility = visibility;
        this.backgroundColor = backgroundColor;
        this.paddingAttrs = paddingAttrs;
    }

    public TextViewAttributes(Parcel in) {
        text = in.readString();
        textColor = in.readInt();
        textSize = in.readInt();
        visibility = in.readInt();
        backgroundColor = in.readInt();
        paddingAttrs = in.createIntArray();
    }

    public static final Creator<TextViewAttributes> CREATOR = new Creator<TextViewAttributes>() {
        @Override
        public TextViewAttributes createFromParcel(Parcel in) {
            return new TextViewAttributes(in);
        }

        @Override
        public TextViewAttributes[] newArray(int size) {
            return new TextViewAttributes[size];
        }
    };

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(text);
        dest.writeInt(textColor);
        dest.writeInt(textSize);
        dest.writeInt(visibility);
        dest.writeInt(backgroundColor);
        dest.writeIntArray(paddingAttrs);
    }
}

这是保存值的方法：

@Override
    protected void onSaveInstanceState(Bundle outState) {
        int[] padding = {0,5,1,3};
        TextViewAttributes attributes = new TextViewAttributes("message", 4, 5, 7, 1, padding);
        ArrayList<TextViewAttributes> list = new ArrayList<TextViewAttributes>();
        list.add(attributes);
        outState.putParcelableArrayList("keyTextViewAttributes", list);
        super.onSaveInstanceState(outState);
    }

这就是你在onCreate方法中检索它们的方法：

 if (savedInstanceState != null) {
            ArrayList<TextViewAttributes> textViewAttributes = savedInstanceState.getParcelableArrayListExtra("keyTextViewAttributes");
        }

Answer 2

只需在configChanges中的activity标记中添加AndroidManifest.xml作为gien，如下所示：

<activity
    android:name=".TextureViewActivity"
    android:configChanges="orientation|screenSize"/>

Answer 3

onSaveInstaceState（）可以毫无问题地保存所有内容。缺点是你必须使用大量的键来表示值，并且在某些时候它会变得混乱。

通过检查 savedInstanceState 是否 NULL 并使用我之前使用的相同密钥，在 onCreateView（）中恢复它们。 / p>

修改实际上，您并不需要保存这些值。更改屏幕方向时，将重新创建包含适配器的片段以及适配器。但是您在适配器中对您的值进行了硬编码。因此，您无需保存它们。

方向更改后保存textview属性

3 个答案: