android 实现沉浸式，状态栏

private ConfigUtils() {
}

/**
* 获取状态栏高度![这里写图片描述](//img-blog.csdn.net/20180321101454292?watermark/2/text/Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNzg5MDcz/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70)
*/
public static final int getStatusHeight(Context context) {
int result = 0;
int resId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resId > 0) {
result = context.getResources().getDimensionPixelOffset(resId);
}
return result;
}

/**
* 判断是否是4.4以上版本， 只有4.4以上版本才有沉浸式
*/
public static boolean hasKitKat() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
}

/**
* 由于全屏时转非全屏时界面中的布局大小不能改变,所以不能使用流行的在windows中添加一个
* Status 高度的控件来填充内容,  直接使用toolbar设置padding效果
* @param activity
* @param toolbar
*/
public static void setStatusBarColor(Activity activity, Toolbar toolbar) {
if (toolbar.getTag() == null) {
ViewGroup.LayoutParams params = toolbar.getLayoutParams();
int statusHeight = getStatusHeight(activity);
params.height += statusHeight;
toolbar.setLayoutParams(params);
toolbar.setPadding(toolbar.getPaddingLeft(), toolbar.getPaddingTop() + statusHeight,
toolbar.getPaddingRight(), toolbar.getPaddingBottom());
toolbar.setTag(true);
//toolbar默认有16dp的margin值,可以设置为0,或在布局中配置
toolbar.setContentInsetsRelative(0,0);
}
if (hasKitKat()) {  //设置显示toolbar时的样式
activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
}
}

private Toolbar mToolbar;
private View iv;
private boolean isfull;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_top_bar_view);
mToolbar = findView(R.id.m_tool_bar);
iv=findViewById(R.id.iv);
iv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (isfull){
full(false);
isfull=false;
}else {
full(true);
isfull=true;
}
}
});
ConfigUtils.setStatusBarColor(TopBarView.this,mToolbar);
initActionBar();
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);

}

private void full(boolean enable) {
if (!enable){
//非全屏
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
mToolbar.clearAnimation();
Animation animation = AnimationUtils.loadAnimation(TopBarView.this, R.anim.top_translate_enter);
mToolbar.setAnimation(animation);
ConfigUtils.setStatusBarColor(TopBarView.this, mToolbar);
mToolbar.setVisibility(View.VISIBLE);
animation.start();
}else{
mToolbar.clearAnimation();
Animation animation = AnimationUtils.loadAnimation(this, R.anim.top_translate_exit);
mToolbar.setAnimation(animation);
animation.start();
mToolbar.setVisibility(View.GONE);
//清除非全屏时的flags,并设置全屏flag
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
}
}

private void initActionBar() {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
setSupportActionBar(mToolbar);
ActionBar bar = getSupportActionBar();
bar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
View actionView = LayoutInflater.from(this).inflate(R.layout.actionbar_main, null);
ActionBar.LayoutParams actionBarParams = new ActionBar.LayoutParams(
ActionBar.LayoutParams.MATCH_PARENT, ActionBar.LayoutParams.MATCH_PARENT);
bar.setCustomView(actionView, actionBarParams);
}