Android:保存旋转变量和设置

Question

当屏幕旋转时，有没有办法保存代码中正在更改的变量？预先感谢您

Answer 1

您可以在停止 Activity 时将值保存到instanceState Bundle中，并在启动 Activity 时恢复它。像这样:

@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    // Read values from the "savedInstanceState"
}

@Override
protected void onSaveInstanceState(Bundle outState) {
    // Save the values you need into "outState"
    super.onSaveInstanceState(outState);
}