概述
Activity和广播
/**
下载APK细节
1、点击升级后对话框不消失，再次点击时不能重复下载
2、下载过程中退出APP，下次进入应用后要重新下载（因为可能不完整）
3、下载过程中退出APP（或下载完成后退出），如果APK已经下载完毕，则下次进入应用后不再下载
4、如果下载的APK被清除了，要重新下载
5、断网后重新连接或切换网络后不受影响
*/
public class MainActivity extends Activity {
private TextView textView;
private DownloadCompleteReceiver receiver = null;
private String url = "http://113.107.216.43/imtt.dd.qq.com/16891/BD5BA98958C0FEC9D88FB65BF5534A3B.apk?mkey=581c007d0e1baac8&f=8a5d&c=0&fsname=com.bcb_2.0.2_52.apk&csr=4d5s&p=.apk";
private String fileName;
private AlertDialog dialog;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
textView = new TextView(this);
setContentView(textView);
fileName = "福利金融-" + Utiles.getVersionCode(this) + ".apk";
textView.setText("文件名：" + fileName //
+ "n文件路径：" + Utiles.getApkFile(fileName).getPath() //
+ "n是否已下载过此版本的安装包：" + Utiles.getIsDownloaded(this, fileName)//
+ "n是否已下载时退出了：" + Utiles.getIsFinishedWhenDownloading(this));
showVersionDialog();
}
private void showVersionDialog() {
AlertDialog.Builder ibuilder = new AlertDialog.Builder(this);
ibuilder.setTitle("版本更新啦！");
ibuilder.setMessage("优化用户界面，界面更好看n修复所有已经的bug");
ibuilder.setNegativeButton("退出应用", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
dialog = null;
finish();
}
});
ibuilder.setPositiveButton("立即更新", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
File file = Utiles.getApkFile(fileName);
if (Utiles.getIsDownloaded(MainActivity.this, fileName)) {//已下载完毕
if (file == null || !file.exists()) {
Utiles.clearSP(MainActivity.this);//清空保存的两个数据
registerReceiver();//被删了，重新下载
} else Utiles.installApk(MainActivity.this, file);//否则，安装
} else if (Utiles.getIsFinishedWhenDownloading(MainActivity.this)) {//上次在下载过程中退出了，下次进入应用时重新下载
registerReceiver();//重新下载
} else if (file != null && file.exists()) {//正在下载
Toast.makeText(MainActivity.this, "正在下载，请稍后", Toast.LENGTH_SHORT).show();
} else {//没下载过
registerReceiver();
}
}
});
dialog = ibuilder.create();
dialog.setCanceledOnTouchOutside(false);
dialog.setCancelable(false);
dialog.show();
}
private void registerReceiver() {
receiver = new DownloadCompleteReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(DownloadManager.ACTION_DOWNLOAD_COMPLETE);//下载完成的动作
registerReceiver(receiver, intentFilter);
Utiles.downLoadFile(MainActivity.this, url, fileName);//开始下载
}
class DownloadCompleteReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) {
Toast.makeText(MainActivity.this, "下载完毕", Toast.LENGTH_SHORT).show();
textView.append("下载完毕");
Utiles.saveIsDownloaded(context, fileName);
Utiles.installApk(context, Utiles.getApkFile(fileName));
if (receiver != null) {
unregisterReceiver(receiver);
receiver = null;
}
}
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (receiver != null) {//如果receiver不为空，说明正在下载APK包，即使应用退出了，也会继续下载
unregisterReceiver(receiver);
Utiles.saveIsFinishedWhenDownloading(this);//如果在下载过程中退出了，下次进入应用时重新下载
}
}
}
工具
public class Utiles {
public static final String SP_NAME = "version";
public static final String FILE_PATH = "/fljr/apk";
/**返回下载的APK文件*/
public static File getApkFile(String fileName) {
String filePath = Environment.getExternalStorageDirectory().getPath() + FILE_PATH + File.separator + fileName;
return new File(filePath);
}
/**安装指定的APK包*/
public static void installApk(Context context, File apkFile) {
Intent mIntent = new Intent(Intent.ACTION_VIEW);
mIntent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive");
mIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(mIntent);
}
/**获取VersionCode*/
public static int getVersionCode(Context context) {
try {
PackageInfo packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
return packageInfo.versionCode;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
return 0;
}
}
/**清空SP的数据*/
public static void clearSP(Context context) {
SharedPreferences.Editor editor = context.getSharedPreferences(SP_NAME, 0).edit();
editor.clear();
editor.commit();
}
//******************************************************************************************
/**记录是否在下载过程中退出了，如果在下载过程中退出了，下次进入应用时重新下载*/
public static void saveIsFinishedWhenDownloading(Context context) {
SharedPreferences.Editor editor = context.getSharedPreferences(SP_NAME, 0).edit();
editor.putBoolean("finish", true);
editor.commit();
}
/**是否在下载过程中退出了*/
public static boolean getIsFinishedWhenDownloading(Context context) {
return context.getSharedPreferences(SP_NAME, 0).getBoolean("finish", false);
}
//******************************************************************************************
/**记录是否已下载过指定版本的APK包*/
public static void saveIsDownloaded(Context context, String fileName) {
SharedPreferences.Editor editor = context.getSharedPreferences(SP_NAME, 0).edit();
editor.putBoolean(fileName, true);
editor.commit();
}
/**查看是否已下载过指定版本的APK包*/
public static boolean getIsDownloaded(Context context, String fileName) {
return context.getSharedPreferences(SP_NAME, 0).getBoolean(fileName, false);
}
/**下载文件*/
public static void downLoadFile(Context mContext, String url, String fileName) {
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url))//下载路径
.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE)//显示方式。默认，下载过程中显示，下载完成后自动消失
.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE)//网络设置
.setDestinationInExternalPublicDir(FILE_PATH, fileName);//文件下载路径
((DownloadManager) mContext.getSystemService(Context.DOWNLOAD_SERVICE)).enqueue(request);
}
}
来自为知笔记(Wiz)
最后
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