Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.hide()

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于 2017-02-27 17:28:49 发布

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分类专栏：报错信息文章标签： Attempt to invoke vi

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空指针异常: Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.hide()

错误代码处:

public class MainActivity extends AppCompatActivity {
  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initState();
    }

    private void initState() {
        View decorView = getWindow().getDecorView();
        int option = View.SYSTEM_UI_FLAG_FULLSCREEN;
        decorView.setSystemUiVisibility(option);
        ActionBar actionBar = getSupportActionBar();
        actionBar.hide();
        }

}