一套完整的APP版本更新代码【原创】
在很多APP中版本更新是最基本的一个功能了，那么从检查版本更新到下载自动安装这一系列过程改如何实现呢，当然有很多方式，这里我总结了一种其中很基本的方式。这是效果图：检查更新这个就不多说啦，这里我用的是通过OkHttpUtils网络请求框架来检测新版本。当然OkHttpUtils也有自己的下载功能，但是好像有很多限制，其中文件过大就会下载失败内存溢出等问题。public void checkUpdate(Activity activity, final boolean isShowTip) {
OkHttpUtils.get().url(Url.UPDATE_VERSION).build().execute(new StringCallback() {
@Override
public void onError(Call call, Exception e, int id) {
}
@Override
public void onResponse(String response, int id) {
final JsonData jsonData = JsonData.create(response);
int versionCode = jsonData.optInt("version");
int currentVersionCode = SystemUtils.getAppVersionCode(context);
if (versionCode > currentVersionCode) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("更新");
builder.setMessage("检测到有更新,是否立刻更新？");
builder.setNegativeButton("稍后更新", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setPositiveButton("立刻更新", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (!StringUtils.isWifi(context)) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("提示");
builder.setMessage("您当前正在使用移动网络，继续下载将消耗流量");
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
downLoadApk(jsonData.optString("download"));
}
});
builder.create().show();
} else {
downLoadApk(jsonData.optString("download"));
}
}
});
builder.create().show();
} else {
if (isShowTip) {
ToastUtils.show(context, "当前已是最新版本");
}
}
}
});
}
/*
* 从服务器中下载APK
*/
protected void downLoadApk(final String url) {
final ProgressDialog pd; //进度条对话框
pd = new ProgressDialog(this);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setMessage("正在下载更新");
pd.show();
new Thread() {
@Override
public void run() {
try {
File file = DownLoadManager.getFileFromServer(url, pd);
sleep(3000);
installApk(file);
pd.dismiss(); //结束掉进度条对话框
} catch (Exception e) {
Toast.makeText(context, "下载失败!",
Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
}.start();
}
//安装apk
protected void installApk(File file) {
Intent intent = new Intent();
//执行动作
intent.setAction(Intent.ACTION_VIEW);
//执行的数据类型
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
startActivity(intent);
}这里是下载数据的代码DownLoadManager.javaimport java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import android.app.ProgressDialog;
import android.os.Environment;
public class DownLoadManager {
public static File getFileFromServer(String path, ProgressDialog pd) throws Exception {
//如果相等的话表示当前的sdcard挂载在手机上并且是可用的
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
//获取到文件的大小
pd.setMax(conn.getContentLength());
InputStream is = conn.getInputStream();
File file = new File(Environment.getExternalStorageDirectory(), "某某某.apk");
FileOutputStream fos = new FileOutputStream(file);
BufferedInputStream bis = new BufferedInputStream(is);
byte[] buffer = new byte;
int len;
int total = 0;
while ((len = bis.read(buffer)) != -1) {
fos.write(buffer, 0, len);
total += len;
//获取当前下载量
pd.setProgress(total);
}
fos.close();
bis.close();
is.close();
return file;
} else {
return null;
}
}
}
页:
[1]