沉浸式状态栏的实现
1通过设置Theme主题设置状态栏透明
1)xml布局中设置：注意：4.4以前不支持沉浸式状态栏而5.0之后的状态栏默认会有一层阴影
处理方式：设置false
再设置状态栏颜色为透明色
@android:color/transparent
2）代码中设置
2、保证内容不扩充到状态栏区域
1)再布局中 android:fitsSystemWindows=“true”
2)布局中添加占位状态栏
3)直接在代码中设置paddingTop并添加占位状态栏
3、侧滑菜单问题：
1）5.0菜单有阴影：解决办法给NavigationView 加入app:insetForeground="#00000000"
2) 4.4 可以给最外层布局设置fitSystemWidows为true且设置clipToPadding为false
效果图
代码如下
public class SecondActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
int flagTranslucentStatus = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
int flagTranslucentNavigation = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
//5.0以上
// Window window = getWindow();
// WindowManager.LayoutParams attributes = window.getAttributes();
// attributes.flags |= flagTranslucentNavigation;
// window.setAttributes(attributes);
getWindow().setStatusBarColor(Color.TRANSPARENT);
Window window = getWindow();
View decorView = window.getDecorView();
//两个 flag 要结合使用，表示让应用的主体内容占用系统状态栏的空间
int option = View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
decorView.setSystemUiVisibility(option);
window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
window.setStatusBarColor(Color.TRANSPARENT);
} else {
Window window = getWindow();
WindowManager.LayoutParams attributes = window.getAttributes();
attributes.flags |= flagTranslucentStatus | flagTranslucentNavigation;
window.setAttributes(attributes);
}
}
//设置 paddingTop xml中不能再设置fitSystemWidows为true了
ViewGroup rootView = getWindow().getDecorView().findViewById(android.R.id.content);
rootView.setPadding(0, 0, 0, getNavigationBarHeight());
Toolbar toolbar = findViewById(R.id.toolbar);
//设置padding
//设置高度加上状态栏高度
setHeightAndPadding(toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = findViewById(R.id.drawer_layout);
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP) {
drawer.setFitsSystemWindows(true);
drawer.setClipToPadding(false);
}
NavigationView navigationView = findViewById(R.id.nav_view);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
navigationView.setNavigationItemSelectedListener(this);
}
public void setHeightAndPadding(View view) {
ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
layoutParams.height += getStatusBarHeight();
view.setPadding(view.getPaddingLeft(), view.getPaddingTop() + getStatusBarHeight(), view.getPaddingRight(), view.getPaddingBottom());
}
/**
* 获取状态栏高度
*/
public int getStatusBarHeight() {
int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
return getResources().getDimensionPixelSize(resourceId);
}
return 0;
}
private int getNavigationBarHeight() {
int resourceId = getResources().getIdentifier("navigation_bar_height", "dimen", "android");
if (resourceId > 0) {
return getResources().getDimensionPixelSize(resourceId);
}
return 0;
}
@Override
public void onBackPressed() {
DrawerLayout drawer = findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.second, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_home) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_tools) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
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