有谁知道为什么,和/或如何解决这个问题？看起来,在配置更改之后,屏幕尺寸的变化可能会发生很多时候 – 即在调用onConfigurationChanged时配置更改后,尺寸是否不正确？

以下是以下代码的调试输出,在从纵向到横向旋转之后显示onLayout / onSizeChanged调用(请注意,设备为540×960,因此横向宽度应为960,而纵向宽度为540)：

03-13 17:36:21.140: DEBUG/RotateTest(27765): onConfigurationChanged: LANDSCAPE
03-13 17:36:21.169: DEBUG/RotateTest(27765): onSizeChanged:540,884,0
03-13 17:36:21.189: DEBUG/RotateTest(27765): onLayout:true-0,540,884
03-13 17:36:21.239: DEBUG/RotateTest(27765): onSizeChanged:960,464,884
03-13 17:36:21.259: DEBUG/RotateTest(27765): onLayout:true-0,960,464

还要注意的是,第一个onSizeChanged oldwidth和oldheight为0,表示我们刚刚添加到视图层次结构 – 但是具有错误的横向尺寸！

这里是说明这个行为的代码：

MyActivity.java

package com.example;

import android.app.Activity;
import android.content.res.Configuration;
import android.os.Bundle;
import android.util.Log;
import android.widget.FrameLayout;

public class MyActivity extends Activity
{
    private static String TAG = "RotateTest";

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        Log.d(TAG,"onConfigurationChanged: " + (newConfig.orientation == 1 ? "PORTRAIT" : "LANDSCAPE"));
        super.onConfigurationChanged(newConfig);
        _setView();
    }

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        Log.d(TAG,"onCreate");
        super.onCreate(savedInstanceState);
        _setView();
    }

    private void _setView() {
        MyHorizontalScrollView scrollView = new MyHorizontalScrollView(this,null);
        setContentView(scrollView);
    }
}

MyHorizo​​ntalScrollView.java

package com.example;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.HorizontalScrollView;

public class MyHorizontalScrollView extends HorizontalScrollView {

    private static String TAG = "RotateTest";

    public MyHorizontalScrollView(Context context,AttributeSet attrs) {
        super(context,attrs);
    }

    @Override
    protected void onLayout(boolean changed,int l,int t,int r,int b) {
        super.onLayout(changed,l,t,r,b);
        Log.d(TAG,"onLayout:" + String.format("%s-%d,%d,%d",changed,b));
    }

    @Override
    protected void onSizeChanged(int w,int h,int oldw,int oldh) {
        super.onSizeChanged(w,h,oldw,oldh);
        Log.d(TAG,"onSizeChanged:" + String.format("%d,w,oldh));
    }
}

AndroidManifest.xml中

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example"
      android:versionCode="1"
      android:versionName="1.0"
        >

    <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="9"/>

    <application android:label="@string/app_name"
            >
        <activity android:name="MyActivity"
                  android:label="@string/app_name"
                  android:configChanges="orientation"
                >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>