python for android : 显示图片

来源：互联网发布：个人软件定制编辑：程序博客网时间：2024/05/01 03:52
参考: https://code.google.com/p/android-scripting/wiki/FullScreenUI
这是一个简单的图片查看小程序，只有基本功能： back 选图片 next ，还有一个没能实现的功能:横屏显示。
imageview.py
# -*- coding: utf-8 -*-import androidimport os,sys,timereload(sys)sys.setdefaultencoding('utf-8')droid = android.Android()base_dir = '/mnt/sdcard/DCIM/'if not os.path.isdir(base_dir):    print base_dir,'is not dir'    sys.exit(4)def show_dir(path=base_dir):    """Shows the contents of a directory in a list view."""        nodes = sorted(os.listdir(path))    # Make a way to go up a level.    if path != base_dir: nodes.insert(0, '..')    droid.dialogCreateAlert(os.path.basename(path).title())    droid.dialogSetItems(nodes)    droid.dialogShow()    # Get the selected file or directory.    result = droid.dialogGetResponse().result    droid.dialogDismiss()    if 'item' not in result:        return    target = nodes[result['item']]    target_path = os.path.join(path, target)    if target == '..':        target_path = os.path.dirname(path)        if os.path.isdir(target_path):        return show_dir(target_path)    elif os.path.splitext(target)[1].lower() in ('.jpg','.png'):        return target_path    # inform the user.    else:        droid.makeToast('Only .jpg .png files are currently supported!')        returntarget_path = Nonetarget = ''path =''alist =[]def init():    global target_path, target,path,nodes    target_path = show_dir()    path = os.path.dirname(target_path)    alist = imagelist(path)    show_image()    returndef show_image():    global target_path, target,path    if target_path is None: return    if os.path.exists(target_path):        target = os.path.basename(target_path)        img = 'file://' + target_path        droid.fullSetProperty("imageView","src",img)    else:        droid.makeToast('Error: %s not exists',path)    returndef imagelist(path):    global alist    nodes = sorted(os.listdir(path))    alist =[]    for f in nodes:        if os.path.splitext(f)[1].lower() in ('.jpg','.png'):            alist.append(f)    returndef back():    global target_path,target, alist    j = None    for i in range(0,len(alist)):        if alist[i]==target:            j=i            break    if j is None: return    if j >0:        target = alist[j-1]        target_path = os.path.join(path, target)        show_image()    else:        droid.makeToast('this is begin image')    returndef next():    global target_path,target, alist    j = None    len1 = len(alist)    for i in range(0,len1):        if alist[i]==target:            j=i            break    if j is None: return    if j < len1-1:        target = alist[j+1]        target_path = os.path.join(path, target)        show_image()    else:        droid.makeToast('this is end image')    returndef sensor():    droid.startSensingTimed(1, 250)    s4 = droid.sensorsReadAccelerometer().result    x,y,z =s4        if x<1.0 and y>3.0 :        droid.makeToast('portrait  纵向 ')    if x>3.0 and y<1.0 :        droid.makeToast('landscape 横向 ')    if x<1.0 and y<1.0 :        droid.makeToast('horizontal 水平')    returndef eventloop():  while True:    event=droid.eventWait().result    if event["name"]=="click":      id=event["data"]["id"]      if id=="image":        init()      if id=="next":        next()      if id=="back":        back()      if id=="sensor":        sensor()      if id=="Exit":        return    elif event["name"]=="screen":      if event["data"]=="destroy":        returnlayout = """<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"        android:id="@+id/background"        android:orientation="vertical" android:layout_width="match_parent"        android:layout_height="match_parent" android:background="#ff000000">  <LinearLayout android:id="@+id/linearLayout1"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="horizontal">        <Button            android:id="@+id/Exit"            android:layout_width="60dp"            android:layout_height="wrap_content"            android:text="退出"            />        <Button            android:id="@+id/back"            android:layout_width="60dp"            android:layout_height="wrap_content"            android:text="《"            />        <Button            android:id="@+id/image"            android:layout_width="60dp"            android:layout_height="wrap_content"            android:text="图片"            />        <Button            android:id="@+id/next"            android:layout_width="60dp"            android:layout_height="wrap_content"            android:text="》"            />        <Button            android:id="@+id/sensor"            android:layout_width="60dp"            android:layout_height="wrap_content"            android:text="目"            />              </LinearLayout>  <ImageView    android:id="@+id/imageView"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_weight="1"    android:adjustViewBounds="true"    /></LinearLayout>"""droid.fullShow(layout)eventloop()droid.fullDismiss()
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