Question

我正在粘贴我创建的所有三个java类，以便在AppCompatActivity中的片段中创建一个imagegrid，但是我得到了下面粘贴的显示错误。

我的主要活动：

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

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    if (savedInstanceState == null) {
        getSupportFragmentManager().beginTransaction()
                .add(R.id.main_fragment, new MainActivityFragment())
                .commit();
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if (id == R.id.action_settings) {
        return true;
    }

    if (id == R.id.action_sort) {
        showPop();
        return true;
    }

    return super.onOptionsItemSelected(item);
}

public void showPop()
{
    View menuItemView = findViewById(R.id.action_sort);
    PopupMenu popup = new PopupMenu(MainActivity.this, menuItemView);
    MenuInflater inflate = popup.getMenuInflater();
    inflate.inflate(R.menu.sort_popup, popup.getMenu());
    popup.show();
}


}

使用gridview的

片段：

public class MainActivityFragment extends Fragment
{
    public MainActivityFragment(){
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
    ViewGroup root = (ViewGroup) inflater.inflate(R.layout.fragment_main, null);
    GridView gv1=(GridView)root.findViewById(R.id.grid);
    gv1.setAdapter(new ImageAdapter(getActivity()));
    return root;
}

}

imageadapter类：

public class ImageAdapter extends BaseAdapter
{
private Context ctx;

public ImageAdapter(Context c)
{
    ctx=c;
}

@Override
public int getCount()
{
    return pics.length;
}

@Override
public Object getItem(int position)
{
    return null;
}

@Override
public long getItemId(int position)
{
    return 0;
}

@Override
public View getView(int position, View convertView, ViewGroup parent)
{
    ImageView iv;
    if (convertView == null)
    {
        iv = new ImageView(ctx);
        iv.setLayoutParams(new GridView.LayoutParams(350,350));
        iv.setScaleType(ImageView.ScaleType.FIT_XY);
        iv.setPadding(4, 4, 4, 4);
    }
    else
    {
        iv = (ImageView)convertView;
    }
    iv.setImageResource(pics[position]);
    return iv;

}

private Integer[] pics={
        R.drawable.a,R.drawable.b,
        R.drawable.c,R.drawable.d,
        R.drawable.e,R.drawable.f,
        R.drawable.g,R.drawable.h
};

}

我收到此错误日志：

08-20 21:50:15.218 16512-16512/com.example.android.mymovieapp     E/AndroidRuntime: FATAL EXCEPTION: main
                                                                              Process: com.example.android.mymovieapp, PID: 16512
                                                                            java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.android.mymovieapp/com.example.android.mymovieapp.MainActivity}: java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
                                                                                at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
                                                                                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
                                                                                at android.app.ActivityThread.-wrap11(ActivityThread.java)
                                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
                                                                                at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                at android.os.Looper.loop(Looper.java:148)
                                                                                at android.app.ActivityThread.main(ActivityThread.java:5417)
                                                                                at java.lang.reflect.Method.invoke(Native Method)
                                                                                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                                                                                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
                                                                             Caused by: java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
                                                                                at android.support.v7.app.AppCompatDelegateImplV7.setSupportActionBar(AppCompatDelegateImplV7.java:198)
                                                                                at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:130)
                                                                                at com.example.android.mymovieapp.MainActivity.onCreate(MainActivity.java:19)
                                                                                at android.app.Activity.performCreate(Activity.java:6237)
                                                                                at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
                                                                                at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
                                                                                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
                                                                                at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
                                                                                at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                                at android.os.Looper.loop(Looper.java:148) 
                                                                                at android.app.ActivityThread.main(ActivityThread.java:5417) 
                                                                                at java.lang.reflect.Method.invoke(Native Method) 
                                                                                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                                                                                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Answer 1

这是异常错误。尝试围绕你的代码try / catch，

java.lang.RuntimeException：无法启动活动 ComponentInfo {com.example.android.mymovieapp / com.example.android.mymovieapp.MainActivity}： java.lang.IllegalStateException：此Activity已经有一个动作酒吧提供的窗户装饰。不要求 Window.FEATURE_SUPPORT_ACTION_BAR并将windowActionBar设置为false 您的主题是使用工具栏。

使用片段的android图像gridview

1 个答案: