我正在关注本教程。我的应用程序中有 3 个选项卡。在 tab3 中，我正在对一些视图（如按钮和 EditText 微调器等）进行更改，并且代表这些更改，我必须在 tab2 中执行一些操作。简单地说，我在 tab3 中更改了一些值，效果发生在 tab2 中。我知道该怎么做。我只是希望我的视图值每次在tab2和之间切换时都会重置为默认值tab3
- 我的问题是我怎样才能保存我的观点状态。因此，在恢复选项卡时，我必须获得我之前离开的视图的默认外观。
还有一件事我告诉你，我在 onCreateView() 方法中完成了所有工作。这是正确的方法。像这样。
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Toast.makeText(getActivity(), "onCreateView", Toast.LENGTH_SHORT)
.show();
if (container == null) {
return null;
}
View vi = inflater.inflate(R.layout.settings, container, false);
btnInsert = (Button) vi.findViewById(R.id.btnInsert);
btnInsert.setOnClickListener(this);
btnPosition = (Button) vi.findViewById(R.id.btnPosition);
btnPosition.setOnClickListener(this);
txtPosition = (TextView) vi.findViewById(R.id.txtPosition);
txtLogo = (TextView) vi.findViewById(R.id.txtLogo);
imgLogoPreview = (ImageView) vi.findViewById(R.id.imgLogoPreview);
imgLogoPreview.setOnClickListener(this);
edTxtUserText = (EditText) vi.findViewById(R.id.edTxtPreview);
relLogo = (RelativeLayout) vi.findViewById(R.id.RelLogo);
relText = (RelativeLayout) vi.findViewById(R.id.RelText);
logoWheel = (WheelView) vi.findViewById(R.id.wheelLogo);
logoWheel.setAdapter(new ArrayWheelAdapter<String>(logoWheelList));
logoWheel.setVisibleItems(4);
logoWheel.setCurrentItem(1);
positionWheel = (WheelView) vi.findViewById(R.id.wheelPosition);
positionWheel.setAdapter(new ArrayWheelAdapter<String>(
positionWheelTextList));
// LogoWheel changed listener
changedListenerLogo = new OnWheelChangedListener() {
public void onChanged(WheelView wheel, int oldValue, int newValue) {
if (!wheelScrolled) {
}
}
};
logoWheel.addChangingListener(changedListenerLogo);
// Wheel scrolled listener
scrolledListenerLogo = new OnWheelScrollListener() {
public void onScrollStarts(WheelView wheel) {
wheelScrolled = true;
}
public void onScrollEnds(WheelView wheel) {
wheelScrolled = false;
btnInsert.setText(logoWheelList[wheel.getCurrentItem()] + "");
wheel.setVisibility(View.INVISIBLE);
if (wheel.getCurrentItem() == 2) {
txtPosition.setVisibility(View.INVISIBLE);
btnPosition.setVisibility(View.INVISIBLE);
relText.setVisibility(View.INVISIBLE);
relLogo.setVisibility(View.INVISIBLE);
} else if (wheel.getCurrentItem() == 1) {
relText.setVisibility(View.VISIBLE);
relLogo.setVisibility(View.INVISIBLE);
txtPosition.setVisibility(View.VISIBLE);
btnPosition.setVisibility(View.VISIBLE);
btnPosition.setText("Top");
positionWheel.setAdapter(new ArrayWheelAdapter<String>(
positionWheelTextList));
positionWheel.setVisibleItems(4);
positionWheel.setCurrentItem(1);
} else if (wheel.getCurrentItem() == 0) {
relLogo.setVisibility(View.VISIBLE);
relText.setVisibility(View.INVISIBLE);
txtPosition.setVisibility(View.VISIBLE);
btnPosition.setVisibility(View.VISIBLE);
btnPosition.setText("Top Left");
positionWheel.setAdapter(new ArrayWheelAdapter<String>(
positionWheelLogoList));
positionWheel.setVisibleItems(4);
positionWheel.setCurrentItem(1);
}
}
};
logoWheel.addScrollingListener(scrolledListenerLogo);
// /////////////////////Positon Wheel Listners///////////
// LogoWheel changed listener
changedListenerPosition = new OnWheelChangedListener() {
public void onChanged(WheelView wheel, int oldValue, int newValue) {
if (!wheelScrolled) {
}
}
};
positionWheel.addChangingListener(changedListenerPosition);
// Wheel scrolled listener
scrolledListenerPosition = new OnWheelScrollListener() {
public void onScrollStarts(WheelView wheel) {
wheelScrolled = true;
}
public void onScrollEnds(WheelView wheel) {
wheelScrolled = false;
String btnStatus = btnInsert.getText().toString();
if (btnStatus.equals("Logo")) {
btnPosition.setText(positionWheelLogoList[positionWheel
.getCurrentItem()] + "");
} else if (btnStatus.equals("Text")) {
btnPosition.setText(positionWheelTextList[positionWheel
.getCurrentItem()] + "");
}
wheel.setVisibility(View.INVISIBLE);
}
};
positionWheel.addScrollingListener(scrolledListenerPosition);
return vi;
}
在什么时候我必须保存状态，在什么时候我应该检索保存的状态？
请用简单的话告诉我如何实现片段的生命周期。
我也尝试了saveInstance()片段的方法。但没有调用。
谢谢