android下载安装APK

代码安装apk

Intent i = new Intent(Intent.ACTION_VIEW);
String filePath = "/sdcard/XXX.apk";
i.setDataAndType(Uri.parse("file://" + filePath),"application/vnd.android.package-archive");
context.startActivity(i);

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程序卸载

Intent intent = new Intent(Intent.ACTION_DELETE, uri);
intent.startActivity();

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监听是否卸载成功

DeleteReceiver mDeleteReceiver = new DeleteReceiver();//自定义的广播接收类，接收到结果后的操作
IntentFilter filter = new IntentFilter(
Intent.ACTION_PACKAGE_DATA_CLEARED);
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addDataScheme("package");
registerReceiver(mDeleteReceiver, filter); //注册广播和过滤
Intent undeleteIntent = new Intent(Intent.ACTION_DELETE, packageURI);
startActivity(undeleteIntent);

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文件下载

DownloadProvider的权限级别改成 normal了就可以使用了网上也有说明
首先要在AndroidManifest.xml中申请访问DownloadManager的权限

<uses-permission android:name="android.permission.ACCESS_DOWNLOAD_MANAGER"/>

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添加一个下载任务：

ContentValues values = new ContentValues();
values.put(Downloads.URI, url);//指定下载地址
values.put(Downloads.COOKIE_DATA, cookie);//如果下载Server需要cookie,设置cookie
values.put(Downloads.VISIBILITY,Downloads.VISIBILITY_HIDDEN);//设置下载提示是否在屏幕顶部显示
values.put(Downloads.NOTIFICATION_PACKAGE, getPackageName());//设置下载完成之后回调的包名
values.put(Downloads.NOTIFICATION_CLASS, DownloadCompleteReceiver.class.getName());//设置下载完成之后负责接收的Receiver，这个类要继承 BroadcastReceiver
values.put(Downloads.DESTINATION,save_path);//设置下载到的路径，这个需要在Receiver里自行处理
values.put(Downloads.TITLE,title);//设置下载任务的名称
this.getContentResolver().insert(Downloads.CONTENT_URI, values);//将其插入到DownloadManager的数据库中，数据库会触发修改事件，启动下载任务
ContentValues values = new ContentValues();
values.put("uri", uri.toString());
values.put("useragent", "Mozilla/5.0 (Linux; U; Android 1.5; en-us; sdk Build/CUPCAKE) AppleWebKit/528.5+ (KHTML, like Gecko) Version/3.1.2 Mobile Safari/525.20.1");
values.put("notificationpackage", getPackageName());
values.put("notificationclass", "HelloWorld");
values.put("visibility", 1);
values.put("mimetype", mimetype);
values.put("hint", filename);
values.put("description", uri.getHost());
values.put("total_bytes", 1349528);
mResolver = getContentResolver();
mResolver.insert(Uri.parse("content://downloads/download"), values);

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