Android QQ沉浸式状态栏效果是怎么实现的

2025-03-16 02:57:12
推荐回答(1个)
回答1:

首先是两个开启沉浸模式和关闭沉浸模式的函数
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@SuppressLint("NewApi")
public static void hideSystemUI(View view) {
view.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_FULLSCREEN
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
}
@SuppressLint("NewApi")
public static void showSystemUI(View view) {
view.setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
}
这些代码可以在google的开发者文档中找到,可以看这里Using Immersive Full-Screen Mode,上面的代码是在Android 4.4中才会生效,对应的Android版本兼容的判断请自行处理。
此外还需要一个辅助函数,用于获得状态栏高度,使用反射获得。
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/**
* 获状态栏高度
*
* @param context 上下文
* @return 通知栏高度
*/
public int getStatusBarHeight(Context context) {
int statusBarHeight = 0;
try {
Class clazz = Class.forName("com.android.internal.R$dimen");
Object obj = clazz.newInstance();
Field field = clazz.getField("status_bar_height");
int temp = Integer.parseInt(field.get(obj).toString());
statusBarHeight = context.getResources().getDimensionPixelSize(temp);
} catch (Exception e) {
e.printStackTrace();
}
return statusBarHeight;
}

点击hide按钮进入沉浸模式,也就是隐藏状态栏,隐藏状态栏的同时需要修改Toolbar的上内边距,否则会显得很难看,这里注册一个监听OnSystemUiVisibilityChangeListener,当进入沉浸模式后咱们改变Toolbar的上内边距
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hide.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
View view = getWindow().getDecorView();
hideSystemUI(view);
mToolbar.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
@Override
public void onSystemUiVisibilityChange(int visibility) {
mToolbar.setPadding(mToolbar.getPaddingLeft(), 0,mToolbar.getPaddingRight(), mToolbar.getPaddingBottom());
}
});
}
});
进入沉浸模式后,手指从屏幕顶部向下划,状态栏就出现了,过2秒左右它又会自动消失。
点击show按钮退出沉浸模式,同时Toolbar的内边距也要增加到状态栏的高度。
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show.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
View view = getWindow().getDecorView();
showSystemUI(view);
mToolbar.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
@Override
public void onSystemUiVisibilityChange(int visibility) {
mToolbar.setPadding(mToolbar.getPaddingLeft(), getStatusBarHeight(MainActivity.this),mToolbar.getPaddingRight(), mToolbar.getPaddingBottom());
}
});
}
});
如果使用的是SystemBarTintManager这个类进行的状态栏的着色,除上方的操作外,还要在对应的监听里增加状态栏着色的禁止和启动的功能。
进入沉浸模式,要禁用
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tintManager.setStatusBarTintEnabled(false);

退出沉浸模式,要启动
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tintManager.setStatusBarTintEnabled(true);

如果想更加平滑,则可以对padding的改成增加动画,具体动画效果自行添加。

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