动态更改屏幕方向LANDSCAPE与PORTRAIT 转

动态更改屏幕方向……LANDSCAPE与PORTRAIT

package irdc.ex05_22;

 

import android.app.Activity;

import android.content.pm.ActivityInfo;

import android.os.Bundle;

import android.view.Display;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;

 

public class EX05_22 extends Activity

{

private TextView mTextView01;

private Button mButton01;

 

@Override

public void onCreate(Bundle savedInstanceState)

{

    super.onCreate(savedInstanceState);

    setContentView(R.layout.main);

    

    mButton01 = (Button)findViewById(R.id.myButton1); 

    mTextView01 = (TextView)findViewById(R.id.myTextView1);

    

    if(getRequestedOrientation()==-1)

    {

      mTextView01.setText(getResources().getText

      (R.string.str_err_1001));

    }

    

    

    mButton01.setOnClickListener(new Button.OnClickListener()

    {

      @Override

      public void onClick(View arg0)

      {

        

        

        

        if(getRequestedOrientation()==-1)

        {

          

          mTextView01.setText(getResources().getText

          (R.string.str_err_1001));

        }

        else

        {

          if(getRequestedOrientation()==

             ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE)

          {

            

            setRequestedOrientation

            (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

          }

          else if(getRequestedOrientation()==

                  ActivityInfo.SCREEN_ORIENTATION_PORTRAIT)

          {

            

            setRequestedOrientation

            (ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

          }

        }

      }      

    });

}

 

@Override

public void setRequestedOrientation(int requestedOrientation)

{

    // TODO Auto-generated method stub

    

    

    switch(requestedOrientation)

    {

      

      case (ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE):

        mMakeTextToast

        (

          getResources().getText(R.string.str_msg1).toString(),

          false

        );

        break;

      

      case (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT):

        mMakeTextToast

        (

          getResources().getText(R.string.str_msg2).toString(),

          false

        );

        break;

    }

    super.setRequestedOrientation(requestedOrientation);

}

 

@Override

public int getRequestedOrientation()

{

    // TODO Auto-generated method stub

    

    

    return super.getRequestedOrientation();

}

 

public void mMakeTextToast(String str, boolean isLong)

{

    if(isLong==true)

    {

      Toast.makeText(EX05_22.this, str, Toast.LENGTH_LONG).show();

    }

    else

    {

      Toast.makeText(EX05_22.this, str, Toast.LENGTH_SHORT).show();

    }

}

}

 

AndroidMinifest.xml

 

<?xml version="1.0" encoding="utf-8"?>

<manifest

xmlns:android="http://schemas.android.com/apk/res/android"

package="irdc.ex05_22"

android:versionCode="1"

android:versionName="1.0.0">

<application

    android:icon="@drawable/icon"

    android:label="@string/app_name">

    <activity

      android:name=".EX05_22"

      android:label="@string/app_name"

      android:screenOrientation="portrait">

      <intent-filter>

        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />

      </intent-filter>

    </activity>

</application>

</manifest>