android屏幕颜色过滤调节（可用于护眼模式）

实现思路
1.android 创建 透明 dailog 对dailog 进行 背景 颜色的改变 达到遮罩 下方内容的效果
2.颜色的 过滤调节 算法 就是对 分别对 rgb三原色 的增加与减少
3.改变颜色核心代码：

 ImageView iv_main=dialog.findViewById(R.id.ll_main);
 iv_main.setBackgroundColor(Color.argb(alapha,red,green,blue));

实现的界面图

完整acitivty代码:

public class ReadActivity extends AppCompatActivity{
    SeekBar sb_ld,sb_r,sb_b,sb_g;
    ImageView iv_main;
    Dialog dialog;

    //红蓝绿 三原色的初始值
    private int blue=100;
    private int red=100;
    private int green=100;
    private int ld=0;
    private int alapha=100;

    private int blueProgress=0;
    private int redProgress=0;
    private int greenProgress=0;
    private int ldProgress=0;


    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.read);
        initData();
//        permission();
        initListner();
    }

    private void initListner() {
        Button bt_test=findViewById(R.id.bt_test);
        bt_test.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                openAleterWindow();
            }
        });
    }

    public  void initData(){    //每当打开acitivy 对 sharedprefernces 初始化

        SharedPreferences myPreference=getSharedPreferences("myPreference", Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = myPreference.edit();
        editor.putInt("ld", 0);
        editor.putInt("red", 100);
        editor.putInt("blue", 100);
        editor.putInt("green", 100);
        editor.commit();

    }

    public void getData(){  //获取 存储 sharePrefrence 保存的三原色值
        SharedPreferences preferences=getSharedPreferences("myPreference", Context.MODE_PRIVATE);
        ld=preferences.getInt("ld",0);
        red=preferences.getInt("red",100);
        green=preferences.getInt("green",100);
        blue=preferences.getInt("blue",100);
        Log.e("this","get"+ld+red+green+blue);
        sb_ld.setProgress(ld);
        sb_r.setProgress(100-red);
        sb_g.setProgress(100-green);
        sb_b.setProgress(100-blue);
        iv_main.setBackgroundColor(Color.argb(alapha,red,green,blue));
        changeAppBrightness(ld);
        Log.e("this","getR"+red);
    }


    private void openAleterWindow() {   //打开 dailog 窗口 对 dailog 初始化

        dialog=new Dialog(this,R.style.dialog_translucent);
        dialog.setContentView(R.layout.dailog);

        // 全屏
        WindowManager.LayoutParams lp = dialog.getWindow().getAttributes();
        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
        lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
        dialog.getWindow().setAttributes(lp);

        dialog.show();

        final ImageView iv_guanbi=dialog.findViewById(R.id.iv_guanbi);
        iv_guanbi.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //保存 配置
                SharedPreferences myPreference=getSharedPreferences("myPreference", Context.MODE_PRIVATE);
                SharedPreferences.Editor editor = myPreference.edit();
                if(ld>=0&&ld<=100&&red>=0&&red<=100&&blue>=0&blue<=100&&green>=0&&green<=100) {
                    editor.putInt("ld", ld);
                    editor.putInt("red", red);
                    editor.putInt("blue", blue);
                    editor.putInt("green", green);
                    editor.commit();
                }
                Log.e("this","data"+ld+red+blue+green);

                dialog.dismiss();
            }
        });



        sb_ld=dialog.findViewById(R.id.sb_ld);
        sb_r=dialog.findViewById(R.id.sb_r);
        sb_b=dialog.findViewById(R.id.sb_b);
        sb_g=dialog.findViewById(R.id.sb_g);
        iv_main=dialog.findViewById(R.id.ll_main);
        getData();

        sb_ld.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                int add=progress-ldProgress;
                ld=ld+add;
                ldProgress=progress;
                Log.e("this","ld:"+ld);
                changeAppBrightness(ld);
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

            }
        });




        sb_r.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {




                int add=progress-redProgress;
                red=red-add;
                redProgress=progress;
                Log.e("this","red:"+red);
                iv_main.setBackgroundColor(Color.argb(alapha,red,green,blue));
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

            }
        });


        sb_b.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

//                View view=LayoutInflater.from(ReadActivity.this).inflate(R.layout.dailog,null);
//                view.setBackgroundColor(Color.argb(1,255,0,0));
//                dialog.setContentView(view);
                int add=progress-blueProgress;
                blue=blue-add;
                blueProgress=progress;
                Log.e("this","blue:"+blue);
                iv_main.setBackgroundColor(Color.argb(alapha,red,green,blue));
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

            }
        });




        sb_g.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

                int add=progress-greenProgress;
                green=green-add;
                greenProgress=progress;
                Log.e("this","green:"+green);
                iv_main.setBackgroundColor(Color.argb(alapha,red,green,blue));
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

            }
        });




    }



    public void permission(){
        if (Build.VERSION.SDK_INT >= 23) {
            if(!Settings.canDrawOverlays(this)) {
                Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
                startActivity(intent);
            }
    }
}


    public void changeAppBrightness(int brightness) {   //改变系统屏幕亮度
        WindowManager.LayoutParams lp = getWindow().getAttributes();

        lp.screenBrightness = Float.valueOf(brightness) * (1f / 255f);

        getWindow().setAttributes(lp);
    }


}

dailog.xml

<?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_guanbi"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:src="@drawable/guanbi"
        />

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


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:orientation="vertical"
        >
        <LinearLayout
            android:id="@+id/ll_ld"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="亮度调节:"
                />
            <SeekBar
                android:id="@+id/sb_ld"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/ll_r"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="红光调节:"
                />
            <SeekBar
                android:id="@+id/sb_r"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/ll_b"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="蓝光调节:"
                />
            <SeekBar
                android:id="@+id/sb_b"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/ll_g"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="绿光调节:"
                />
            <SeekBar
                android:id="@+id/sb_g"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />
        </LinearLayout>



    </LinearLayout>

</RelativeLayout>

read.xml

<?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">
    

    <Button
        android:id="@+id/bt_test"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="调节"
        />


</RelativeLayout>