此功能用于将图像保存在 sdcard 上(我仅在模拟器上测试过):
public String SaveImage(String URL,String imagename){
Bitmap bitmap = null;
InputStream in = null;
String path = Environment.getExternalStorageDirectory().toString();
File dir = new File(path + "/bh");
if(!dir.exists())
new File(path + "/bh").mkdir();
Log.i("in save()", "after file");
File mImageFile = new File(path+"/bh/"+imagename);
if(mImageFile.exists())
Toast.makeText(mContext, "Saved", Toast.LENGTH_LONG).show();
try{
in = OpenHttpConnection(URL);
bitmap = BitmapFactory.decodeStream(in);
FileOutputStream out = new FileOutputStream(mImageFile);
bitmap.compress(CompressFormat.JPEG, 100,out);
out.flush();
out.close();
in.close();
return imagename+".jpg";
}catch(IOException ex){
Log.e("==== Error in saving image ====",ex.getMessage());
return "";
}
}
我添加了如下所需的权限:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="mobile.bh"
android:versionCode="4"
android:versionName="1.0.3" >
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:icon="@drawable/icon"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
<activity
android:name="mobile.bh.activities.BHActivity"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="mobile.bh.activities.RecipesListActivity"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="mobile.bh.activities.RecipeInfoActivity"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="mobile.bh.activities.IngredientsActivity"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="mobile.bh.activities.MethodActivity"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="mobile.bh.activities.SpicesListActivity"
android:screenOrientation="portrait" >
</activity>
<activity android:name=".activities.SpicesCategoriesActivity" >
</activity>
<activity android:name=".activities.CategoryActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>