的Android GridView的倒车操纵定向更改

Question

编辑后：我的主应用程序屏幕使用GridView控件来显示图标的网格这个问题可能与BaseAdapter causing ListView to go out of order when scrolled

---

。每个图标都有一个图像，名称和意图。我将“活动”设置为处理方向更改，以便我可以更改背景。该onCreate方法建立在GridView 3测试图标没有做任何事情，它会打开一个PreferencesActivity首选项图标：

super.onCreate(savedInstanceState); 
setContentView(R.layout.main); 

GridView gv = (GridView) findViewById(R.id.main_grid); 
if (getResources().getConfiguration().orientation == 
     Configuration.ORIENTATION_LANDSCAPE) 
    gv.setBackgroundResource(R.drawable.main_bg_horiz); 
else 
    gv.setBackgroundResource(R.drawable.main_bg); 

ArrayList<Icon> icons = new ArrayList<Icon>(); 
icons.add(new Icon("Test 1", R.drawable.test1, null)); 
icons.add(new Icon("Test 2", R.drawable.test2, null)); 
icons.add(new Icon("Test 3", R.drawable.test3, null)); 
icons.add(new Icon("Preferences", R.drawable.perferences, new Intent(this, 
     AlertPreferences.class))); 
IconAdapter ia = new IconAdapter(icons); 
gv.setAdapter(ia); 
gv.setOnItemClickListener(new OnItemClickListener() { 
    @Override 
    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3){ 
     Intent i = ((IconAdapter)arg0.getAdapter()).getItem(arg2).getIntent(); 
     if (i != null) 
      HomeActivity.this.startActivity(i); 
    } 
}); 

而且onConfigurationChanged很简单：

super.onConfigurationChanged(newConfig);  
GridView gv = (GridView) findViewById(R.id.main_grid); 

if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) 
    gv.setBackgroundResource(R.drawable.main_bg_horiz); 
else 
    gv.setBackgroundResource(R.drawable.main_bg); 

背景变化很好，但代码引入了GridView的一个新问题。无论我如何开始应用程序，它都可以工作。但是，当我改变方向时，GridView中图标的顺序反转。当我旋转屏幕回到它开始的方向时，一切都恢复正常。这里发生了什么？

Answer 1

它实际上与自定义适配器的问题。问题和解决办法都在这里BaseAdapter causing ListView to go out of order when scrolled

Answer 2

尝试你在哪里设置用户界面逻辑分离：

GridView gv; 

public void onCreate(Bundle savedInstanceState){ 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    configureYourUIHere();  
} 

public void configureYourUIHere(){ 
    gv = (GridView) findViewById(R.id.main_grid); 
    if (getResources().getConfiguration().orientation == 
      Configuration.ORIENTATION_LANDSCAPE) 
     gv.setBackgroundResource(R.drawable.main_bg_horiz); 
    else 
     gv.setBackgroundResource(R.drawable.main_bg); 

    ArrayList<Icon> icons = new ArrayList<Icon>(); 
    icons.add(new Icon("Test 1", R.drawable.test1, null)); 
    icons.add(new Icon("Test 2", R.drawable.test2, null)); 
    icons.add(new Icon("Test 3", R.drawable.test3, null)); 
    icons.add(new Icon("Preferences", R.drawable.perferences, new Intent(this, 
      AlertPreferences.class))); 
    IconAdapter ia = new IconAdapter(icons); 
    gv.setAdapter(ia); 
    gv.setOnItemClickListener(new OnItemClickListener() { 
     @Override 
     public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3){ 
      Intent i = ((IconAdapter)arg0.getAdapter()).getItem(arg2).getIntent(); 
      if (i != null) 
       HomeActivity.this.startActivity(i); 
     } 
    }); 
} 

public void onConfigurationChanged(Configuration newConfig){ 
    super.onConfigurationChanged(newConfig);  
    configureYourUIHere(); 
}