方向更改错误时更改布局

时间:2012-03-26 02:27:09

标签: android orientation android-orientation

我正在尝试让我的应用在方向更改时更改布局。这是我的代码:

package com.wish.list;

import com.wish.list.R;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.OrientationEventListener;
import android.view.WindowManager;
import android.widget.ListView;

public class ListOfLists extends Activity{

 public void onCreate(Bundle savedInstanceState) {


     // Orientation Change starts here:
     private void setContentBasedOnLayout()
         WindowManager winMan = (WindowManager) getBaseContext().getSystemService(Context.WINDOW_SERVICE);

         if (winMan != null)
         {
             int orientation = winMan.getDefaultDisplay().getOrientation();

             if (orientation == 0) {
                 // Portrait
                 setContentView(R.layout.listsportrait);
             }
             else if (orientation == 1) {
                 // Landscape
                 setContentView(R.layout.listslandscape);
             }            
         }

     }
     // End of Orientation Change

        ListView listsList = (ListView) findViewById(R.id.lists);
    }
    }
 }

在线

public void onCreate(Bundle savedInstanceState) {

我收到此错误:

“此行有多个标记:

- 语法错误,插入“}”以完成MethodBody

- 覆盖android.app.Activity.onCreate“

此外,有没有办法更改它,所以它不必重新启动方向更改活动?我有它所以Facebook在应用程序开始时检查用户的登录详细信息,并且每次方向更改时都必须重新检查它。

修改

所以代码现在看起来应该是这样的吗?

package com.wish.list;

import com.wish.list.R;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.os.Bundle;
import android.view.OrientationEventListener;
import android.view.WindowManager;
import android.widget.ListView;

public class ListOfLists extends Activity{

 public void onCreate(Bundle savedInstanceState) {
 }
 @Override
 public void onConfigurationChanged(Configuration newConfig) 
 {
     super.onConfigurationChanged(newConfig);

         // Checks the orientation of the screen
     if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) 
     {
         setContentView(R.layout.listslandscape);
     } 
     else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT)
     {
         setContentView(R.layout.listsportrait);
     }
 }
     // Orientation Change starts here:
     private void setContentBasedOnLayout(){
         WindowManager winMan = (WindowManager)getBaseContext().getSystemService(Context.WINDOW_SERVICE);

         if (winMan != null)
         {
             int orientation = winMan.getDefaultDisplay().getOrientation();

             if (orientation == 0) {
                 // Portrait
                 setContentView(R.layout.listsportrait);
             }
             else if (orientation == 1) {
                 // Landscape
                 setContentView(R.layout.listslandscape);
             }            
         }


     // End of Orientation Change

        ListView listsList = (ListView) findViewById(R.id.lists);
 }     
}

或者我是否删除了setContentBasedOnLayout部分并将其替换为onConfigurationChanged代码?

1 个答案:

答案 0 :(得分:4)

onCreate

后插入“}”

如果您不希望在方向更改时重新启动活动,

1.清单下面的声明:

<activity android:name=".MyActivity"
          android:configChanges="orientation|keyboardHidden"
          android:label="@string/app_name">

2.取消活动中的onConfigurationChanged

@Override
public void onConfigurationChanged(Configuration newConfig) 
{
    super.onConfigurationChanged(newConfig);

        // Checks the orientation of the screen
    if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) 
    {
        setContentView(R.layout.listslandscape);
    } 
    else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT)
    {
        setContentView(R.layout.listsportrait);
    }
}

修改

是的,您应该删除setContentBasedOnLayout部分。方向更改后,将调用onConfigurationChanged而不是onCreate