从DialogFragment设置状态栏颜色

Question

我正在创建一个动态更改状态栏颜色的应用程序。

从任何片段调用时，我在主Activity类中的方法工作正常。片段放在Activity pager中：

public void setStatusBarColorIfPossible(int color) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        getWindow().setStatusBarColor(color);
    }
}

但是，在任何片段中创建并全屏显示的DialogFragment中，调用my方法无效。状态栏立即变黑（在styles.xml中设置），我无法更改它。

public class AddOrEditWeekPlanDialog extends DialogFragment {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setStyle(DialogFragment.STYLE_NORMAL, R.style.MyDialog);
    }

    @Override
    public void onStart() {
        super.onStart();
        Dialog d = getDialog();
        if (d!=null){
            int width = ViewGroup.LayoutParams.MATCH_PARENT;
            int height = ViewGroup.LayoutParams.MATCH_PARENT;
            d.getWindow().setLayout(width, height);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View root = inflater.inflate(R.layout.fragment_dialog, container, false);
        Button button = (Button)root.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ((ThermostatActivity) getActivity()).setStatusBarColorIfPossible(0xFF0D47A1);
            }
        });

        return root;
    }

    @Override
    public void onResume() {
        super.onResume();

    }
}

styles.xml：

// Set in manifest for main activity
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
</style>

// Set in dialog class
<style name="MyDialog" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="android:windowIsFloating">false</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
</style>

resources.xml中：

<resources>
    <color name="colorPrimary">#FFB72020</color>
    <color name="colorPrimaryDark">#000</color>
    <color name="textColor">#fff</color>
    <color name="tabsScrollColor">#fff</color>
</resources>

谁能解释我为什么？

Answer 1

为了setStatusBarColor，你需要设置标志：FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS

“标志，指示此窗口负责绘制系统条的背景。” （Google API等级21）

试试这段代码：

public void setStatusBarColorIfPossible(int color) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
       getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
       getWindow().setStatusBarColor(color);
    }
}

Answer 2

这适合我。

 @Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);


    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        Objects.requireNonNull(Objects.requireNonNull(getDialog()).getWindow()).addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        Objects.requireNonNull(Objects.requireNonNull(getDialog()).getWindow()).setStatusBarColor(getResources().getColor(R.color.light_green_400));
    }

}

Answer 3

使用FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS并在getDecorView中更改索引0中的height子节点。

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
       if (getDialog().getWindow() != null) {

              // Flag
              getDialog().getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); 

              // DeviceScreenHeight
              WindowManager windowManager = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
              DisplayMetrics displayMetrics = new DisplayMetrics();
              windowManager.getDefaultDisplay().getMetrics(displayMetrics);
              int deviceScreenHeight = displayMetrics.heightPixels;

              // Change height child At index zero 
              ((ViewGroup) getDialog().getWindow().getDecorView().getRootView()).getChildAt(0).getLayoutParams().height = deviceScreenHeight;

        }
}