Question

我已经从开发者指南中下载了Navigation Drawer示例，我尝试将GridView实现为Drawer的一个选项的Activity，但是在执行时GridView没有出现， IDE没有向我显示任何错误，在一个例子中，我可以成功地完成GridView，如何解决这个问题？

我的代码在这里：

在MainActivity中，我使用与

中的示例相同的内容

Fragment fragment;
FragmentManager fragmentManager;
fragment = new inicioFragment(R.layout.inicio);
fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

InicioActivity.java

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.TextView;
public class InicioActivity extends Activity {
    TextView tv1;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.inicio);    
        tv1=(TextView)findViewById(R.id.tv1);
        GridView gv = (GridView)findViewById(R.id.gridView1); 
        gv.setAdapter(new ImageAdapter(this.getApplicationContext()));
        gv.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View v, int position, long id){              
                String g=Integer.toString(position);
                tv1.setText(g);
            }
        });
    }
}

ImageAdapter.java

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

public class ImageAdapter extends BaseAdapter {
private Context mContext;
    public ImageAdapter(Context c) {
        mContext = c;
    }
    public int getCount() {
        return mThumbIds.length;
    }
    public Object getItem(int position) {
        return null;
    }
    public long getItemId(int position) {
        return 0;
    }
    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) {  // if it's not recycled, initialize some attributes
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setPadding(13, 13, 13, 13);
        } else {
            imageView = (ImageView) convertView;
        }
        imageView.setImageResource(mThumbIds[position]);
        return imageView;
    }
    private Integer[] mThumbIds = {
            R.drawable.image_2, R.drawable.image_3,
            R.drawable.image_4, R.drawable.image_5,
            R.drawable.image_6, R.drawable.image_7,
            R.drawable.image_0, R.drawable.image_1,
            R.drawable.image_2, R.drawable.image_3,
            R.drawable.image_4, R.drawable.image_5,
            R.drawable.image_6, R.drawable.image_7,
            R.drawable.image_0, R.drawable.image_1,
            R.drawable.image_2, R.drawable.image_3,
            R.drawable.image_4, R.drawable.image_5,
            R.drawable.image_6, R.drawable.image_7
    };
}

inicio.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="230dp"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/linearLayout1"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/tv2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Aqui van las notificaciones push de facebook" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="fill_parent"
        android:layout_height="230dp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:orientation="horizontal" >

        <GridView
            android:id="@+id/gridView1"
            android:layout_width="156dp"
            android:layout_height="192dp"
            android:numColumns="2" >
        </GridView>

        <TextView
            android:id="@+id/tv1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal|center_vertical"
            android:gravity="center_horizontal|center_vertical"
            android:text="Información" />
    </LinearLayout>
</RelativeLayout>

感谢您的合作!!

Answer 1

尝试将InicioActivity更改为片段并查看此question。我认为你面临同样的问题。

Answer 2

以下对我有用。在Android Studio中：

1）从活动模板列表中创建一个新的导航抽屉活动。

2）请注意，将为您创建多个布局文件，包括 content_main.xml 。使用<GridView> XML替换 content_main.xml 文件中的XML。

3）为GridView创建相关的XML文件或Java类，例如。 ImageAdapter类和GridView项目布局的XML文件。

使用导航抽屉的示例中未显示GridView

2 个答案: