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
<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
<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>