Android Activity加入半透明蒙板,实现夜间模式_透明蒙版viewpager android-优快云博客

本文介绍如何在Android中实现夜间模式，并通过加入半透明蒙板来优化用户体验。通过设置自定义参数，文章详细展示了如何在不同状态间切换夜间模式，提升应用程序在不同光照条件下的适应性。

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Android Activity加入半透明蒙板,实现夜间模式

private View mNightView = null;
private WindowManager mWindowManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
mWindowManager = (WindowManager)getSystemService(Context.WINDOW_SERVICE);
super.onCreate(savedInstanceState);
}

public void night() {
WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT,
WindowManager.LayoutParams.TYPE_APPLICATION,
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);

lp.gravity = Gravity.BOTTOM;// 可以自定义显示的位置
lp.y = 10;
if (mNightView == null) {
mNightView = new TextView(this);
mNightView.setBackgroundColor(0x80000000);
}
try{
mWindowManager.addView(mNightView, lp);
}catch(Exception ex){}

}
public void day(){
try{
mWindowManager.removeView(mNightView);
}catch(Exception ex){}
}
@Override
protected void onResume() {
if(CommonClass.IsNight){
night();
}else{
day();
}
super.onResume();

}
@Override
protected void onDestroy() {
super.onDestroy();
day();
}