来源: 互联网  发布时间: 2014-02-18

新增多媒体类型（一）

一、Gallery应用

1、启动acitity（com.cooliris/media/Gallery.java）

///////////////////////////////AndroidManifes.xml//////////////////////////////////
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name="com.cooliris.media.Gallery" android:label="@string/app_name"
            android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
            android:configChanges="keyboardHidden|orientation"
            android:clearTaskOnLaunch="true" android:noHistory="false"
            android:stateNotNeeded="true">
.................................................

2、isViewIntent()判断action（"android.intent.action.MAIN"）是不是视图"android.intent.action.VIEW"，结果为否，跳过

3、if (isViewIntent() && getInt....也跳过

4、创建RenderView视图

5、sendInitialMessage()向本actitity发送消息

6、第66行接收消息，（private final Handler handler = new Handler() {.......），执行checkStorage

    private final Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case CHECK_STORAGE:
                    checkStorage();
                    break;
                case HANDLE_INTENT:
                    initializeDataSource();
                    break;
            }
        }
    };

7、checkStorage中mImageManagerHasStorageAfterDelay返回true，则直接跳到handler.sendEmptyMessage(HANDLE_INTENT);

    private void checkStorage() {
        mNumRetries++;
        mImageManagerHasStorageAfterDelay = ImageManager.hasStorage();
        if (!mImageManagerHasStorageAfterDelay && mNumRetries < NUM_STORAGE_CHECKS) {
            if (mNumRetries == 1) {
                int res;

                if (Environment.isExternalStorageRemovable()) {
                    res = Res.string.no_sd_card;
                } else {
                    res = Res.string.no_usb_storage;
                }

                mApp.showToast(getResources().getString(res), Toast.LENGTH_LONG);
            }
            handler.sendEmptyMessageDelayed(CHECK_STORAGE, 200);
        } else {

            handler.sendEmptyMessage(HANDLE_INTENT);
      }
    }

 8、第66行接收消息，（private final Handler handler = new Handler() {.......），执行initializeDataSource提取所有数据

 

 

 

    

    来源: 互联网  发布时间: 2014-02-18

XCode 4 - build output directory

Xcode 4 places its build products and other intermediaries/temporary files/indexes in a derived data directory now instead of a "build" directory that is mixed in with your product files. It does this to deal with the new workspaces and also so that you can have clean builds of different projects in different workspaces without contaminating each other.

If your original template was old, your built product is probably relative to your source directory instead of relative to your built products directory, which is why it's showing up red. By default, your derived data directory will be under ~/Library/Developer/Xcode/DerivedData. To see where your current workspace/project is placing these files, you can File->Workspace Settings... and take a look at theBuild Location.

    

    来源: 互联网  发布时间: 2014-02-18

滑动抽屉SlidingDrawer
1.xml 中的ID



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

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

android:layout_width="fill_parent" android:layout_height="fill_parent"

android:orientation="vertical" android:background="@drawable/icon">



<!-- android:orientation="vertical" 设置抽屉 是横向还是纵向-->

<SlidingDrawer android:layout_width="fill_parent"

  android:layout_height="fill_parent" android:handle="@+id/handle"

  android:content="@+id/content"

android:orientation="vertical"

  android:id="@+id/slidingdrawer">



<!--这里用的是 @id/handle 而不是 @+id/handle-->

  <ImageButton android:id="@id/handle" android:layout_width="50dip"

   android:layout_height="44dip" android:src="/blog_article/@drawable/icon/index.html" />




<!--这里用的是 @id/content 而不是 @+id/content-->

  <LinearLayout android:id="@id/content"

   android:layout_width="fill_parent" android:layout_height="fill_parent"

   android:background="#ffffff">


<!--这里的控件可以多个.-->

   <TextView android:text="这是一个滑动式抽屉的示例"

   android:id="@+id/tv"

   android:textSize="18px"

   android:textColor="#000000"

   android:gravity="center_vertical|center_horizontal"

   android:layout_width="fill_parent"

   android:text

   android:layout_height="fill_parent"></TextView>

  </LinearLayout>

</SlidingDrawer>

</LinearLayout>







下面部分转自



http://www.cnblogs.com/salam/archive/2010/10/19/1855511.html



下面的链接也有关于抽屉的..

http://book.51cto.com/art/201007/212101.htm

http://wenku.baidu.com/view/9cf2952ce2bd960590c67725.html



效果图2






一、简介

　　SlidingDrawer隐藏屏外的内容，并允许用户通过handle以显示隐藏内容。它可以垂直或水平滑动，它有俩个View组成，其一是可以拖动的handle,其二是隐藏内容的View.它里面的控件必须设置布局，在布局文件中必须指定handle和content.

例如下面

<SlidingDrawer android:layout_width="fill_parent"
  android:layout_height="fill_parent" android:handle="@+id/handle"
  android:content="@+id/content" android:orientation="vertical"
  android:id="@+id/slidingdrawer">

  <ImageButton android:id="@id/handle" android:layout_width="50dip"
   android:layout_height="44dip" android:src="/blog_article/@drawable/up/index.html" />

  <LinearLayout android:id="@id/content"
   android:layout_width="fill_parent" android:layout_height="fill_parent"
   android:background="#ffffff">

   <TextView android:text="这是一个滑动式抽屉的示例"
   android:id="@+id/tv"
   android:textSize="18px"
   android:textColor="#000000"
   android:gravity="center_vertical|center_horizontal"
   android:layout_width="match_parent"
   android:text
   android:layout_height="match_parent"></TextView>
  </LinearLayout>

</SlidingDrawer>



二、重要属性

　　android:allowSingleTap：指示是否可以通过handle打开或关闭

　　android:animateOnClick：指示是否当使用者按下手柄打开/关闭时是否该有一个动画。

　　android:content：隐藏的内容

　　android:handle：handle（手柄）

三、重要方法

　　animateClose()：关闭时实现动画。

　　close()：即时关闭

　　getContent()：获取内容

　　isMoving()：指示SlidingDrawer是否在移动。

　　isOpened()：指示SlidingDrawer是否已全部打开

　　lock()：屏蔽触摸事件。

　　setOnDrawerCloseListener(SlidingDrawer.OnDrawerCloseListener onDrawerCloseListener)：SlidingDrawer关闭时调用

　　unlock()：解除屏蔽触摸事件。

　　toggle()：切换打开和关闭的抽屉SlidingDrawer。



四、完整实例

1.布局文件slidingdrawer.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical" android:background="@drawable/default_bg">

<SlidingDrawer android:layout_width="fill_parent"
  android:layout_height="fill_parent" android:handle="@+id/handle"
  android:content="@+id/content" android:orientation="vertical"
  android:id="@+id/slidingdrawer">

  <ImageButton android:id="@id/handle" android:layout_width="50dip"
   android:layout_height="44dip" android:src="/blog_article/@drawable/up/index.html" />

  <LinearLayout android:id="@id/content"
   android:layout_width="fill_parent" android:layout_height="fill_parent"
   android:background="#ffffff">

   <TextView android:text="这是一个滑动式抽屉的示例"
   android:id="@+id/tv"
   android:textSize="18px"
   android:textColor="#000000"
   android:gravity="center_vertical|center_horizontal"
   android:layout_width="match_parent"
   android:text
   android:layout_height="match_parent"></TextView>
  </LinearLayout>

</SlidingDrawer>
</LinearLayout>



2.Java代码

package com.wjq;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ImageButton;
import android.widget.SlidingDrawer;
import android.widget.TextView;

public class SlidingDrawerDemo extends Activity {
private SlidingDrawer mDrawer;
private ImageButton imbg;
private Boolean flag=false;
private TextView tv;
/* (non-Javadoc)
  * @see android.app.Activity#onCreate(android.os.Bundle)
  */
@Override
protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.sildingdrawer);
 
  imbg=(ImageButton)findViewById(R.id.handle);
  mDrawer=(SlidingDrawer)findViewById(R.id.slidingdrawer);
  tv=(TextView)findViewById(R.id.tv);
 
  mDrawer.setOnDrawerOpenListener(new SlidingDrawer.OnDrawerOpenListener()
  {
   @Override
   public void onDrawerOpened() {
    flag=true;
    imbg.setImageResource(R.drawable.down);
   }
  });
 
  mDrawer.setOnDrawerCloseListener(new SlidingDrawer.OnDrawerCloseListener(){

   @Override
   public void onDrawerClosed() {
    flag=false;
    imbg.setImageResource(R.drawable.up);
   }
  
  });
 
  mDrawer.setOnDrawerScrollListener(new SlidingDrawer.OnDrawerScrollListener(){

   @Override
   public void onScrollEnded() {
    tv.setText("结束拖动");
   }

   @Override
   public void onScrollStarted() {
   tv.setText("开始拖动");
   }
  });

}

}