AndroidStatusBar透明化方法(不同的版本适配)

public class ImagePreActivity extends AppCompatActivity { 
 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState);  
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { 
      findViewById(android.R.id.content).setSystemUiVisibility( 
          View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE); 
    } 
    setContentView(R.layout.activity_image_pre_layout); 
  } 
}