Android 小說閱讀護眼模式

                                       Android 小說閱讀護眼模式

實現方案：採用全局dialog 覆蓋APP  懸浮在 其他APP之上，給dialog設置護眼色值

自定義護眼模式dialog

public class EyeProtectionDialog extends Dialog {
    ImageView iv;

    public EyeProtectionDialog(@NonNull Context context) {
        super(context, R.style.eye_style);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        Window window = this.getWindow();
        WindowManager.LayoutParams lp = window.getAttributes();
        window.getDecorView().setPadding(0, 0, 0, 0);
        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
        lp.height = WindowManager.LayoutParams.MATCH_PARENT;
        lp.flags = WindowManager.LayoutParams.FLAG_FULLSCREEN | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;  //設置不影響下層的觸碰
        if (Build.VERSION.SDK_INT >= 26) {
            lp.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
        } else {
            lp.type = WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY;
        }
        window.setAttributes(lp);
        window.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.MATCH_PARENT);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.eye_layout);
        iv = findViewById(R.id.iv_eye);
    }

    @Override
    public void show() {
        super.show();
        if (iv != null) {
            iv.setBackgroundColor(getColor(30));
        }
    }

    /**
     *  設置護眼色
     * @param blueFilterPercent
     * @return
     */
    public @ColorInt
    int getColor(int blueFilterPercent) {
        int realFilter = blueFilterPercent;
        if (realFilter < 10) {
            realFilter = 10;
        } else if (realFilter > 80) {
            realFilter = 80;
        }
        int a = (int) (realFilter / 80f * 180);
        int r = (int) (200 - (realFilter / 80f) * 190);
        int g = (int) (180 - (realFilter / 80f) * 170);
        int b = (int) (60 - realFilter / 80f * 60);
        return Color.argb(a, r, g, b);
    }
}

dialog-style

 <style name="eye_style" parent="@android:style/Theme.Dialog">
        <item name="android:windowFrame">@null</item><!-- 邊框 -->
        <item name="android:windowIsFloating">true</item><!-- 是否懸浮在activity上 -->
        <item name="android:windowIsTranslucent">false</item><!-- 半透明 -->
        <item name="android:windowNoTitle">true</item><!-- 無標題 -->
        <item name="android:windowBackground">@android:color/transparent</item><!-- 背景透明 -->
        <item name="android:backgroundDimEnabled">false</item><!-- 模糊 -->
        <item name="android:backgroundDimAmount">0.6</item><!-- 灰度 -->
        <item name="android:windowContentOverlay">@null</item><!-- 對話框是否有遮蓋 -->
    </style>

eye_layout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <ImageView
        android:id="@+id/iv_eye"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </ImageView>
</RelativeLayout>

權限以及展示

public void permission() {
        if (Build.VERSION.SDK_INT >= 23) {
            if (!Settings.canDrawOverlays(getContext())) {
                Uri packageURI = Uri.parse("package:" + ReaderApplication.getInstance().getPackageName());
                Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, packageURI);
                startActivity(intent);
            } else {
                EyeProtectionDialog eyeProtectionDialog = new EyeProtectionDialog(getContext());
                eyeProtectionDialog.show();
            }
        } else {
            EyeProtectionDialog eyeProtectionDialog = new EyeProtectionDialog(getContext());
            eyeProtectionDialog.show();
        }
    }