Android-app自动更新总结（已适配9-0）(1)

}

//检查版本号，第一次请求(post)，，，UpdateAppBean根据服务器返回生成
private void requestAppUpdate(int version, final DataRequestListener listener) {
OkGo.post(Const.HOST_URL + Const.UPDATEAPP).params(“version”, version).execute(new StringCallback() {
@Override
public void onSuccess(Response response) {
Gson gson = new Gson();
UpdateAppBean updateAppBean = gson.fromJson(response.body(), UpdateAppBean.class);
if (updateAppBean.getStatus() == 0) {
listener.success(updateAppBean);
} else {
listener.fail(updateAppBean.getMsg());
}
}

@Override
public void onError(Response response) {
listener.fail(“服务器连接失败”);
dismissLoadingDialog();
}
});
}

//如果有新版本，提示有新的版本，然后下载apk文件
private void updateApp(String apk_url) {
dismissLoadingDialog();
DialogUtils.getInstance().showDialog(this, “发现新的版本，是否下载更新？”,
new DialogUtils.DialogListener() {
@Override
public void positiveButton() {
downloadApp(apk_url);
}
});
}

//下载apk文件并跳转(第二次请求，get)
private void downloadApp(String apk_url) {
OkGo.get(apk_url).tag(this).execute(new FileCallback() {
@Override
public void onSuccess(Response response) {
String filePath = response.body().getAbsolutePath();
Intent intent = IntentUtil.getInstallAppIntent(mContext, filePath);
// 测试过这里必须用startactivity，不能用stratactivityforresult
mContext.startActivity(intent);
dismissLoadingDialog();
mDownloadDialog.dismiss();
mDownloadDialog=null;
}

@Override
public void downloadProgress(Progress progress) {
// showDownloadDialog();
// mProgress.setProgress((int) (progress.fraction * 100));
if (mDownloadDialog == null) {
// 构造软件下载对话框
AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
builder.setTitle(“正在更新”);
// 给下载对话框增加进度条
final LayoutInflater inflater = LayoutInflater.from(mContext);
View v = inflater.inflate(R.layout.item_progress, null);
mProgress = (ProgressBar) v.findViewById(R.id.update_progress);
builder.setView(v);
mDownloadDialog = builder.create();
mDownloadDialog.setCancelable(false);
mDownloadDialog.show();
}
mProgress.setProgress((int) (progress.fraction * 100));
}
});
}

2.2 DataRequestListener：

public interface DataRequestListener {
//请求成功
void success(T data);
//请求失败
void fail(String msg);
}

接下来是工具类，来自github，参考，https://github.com/vondear/RxTool

2.3 AppUpdateUtil：

/**
* 获取App版本码
*
* @param context 上下文
* @return App版本码
*/
public static int getAppVersionCode(Context context) {
return getAppVersionCode(context, context.getPackageName());
}

2.4 IntentUtil：

public class IntentUtil {

/**
* 获取安装App(支持7.0)的意图
*
* @param context
* @param filePath
* @return
*/
public static Intent getInstallAppIntent(Context context, String filePath) {
//apk文件的本地路径
File apkfile = new File(filePath);
if (!apkfile.exists()) {
return null;
}
Intent intent = new Intent(Intent.ACTION_VIEW);
Uri contentUri = FileUtil.getUriForFile(context, apkfile);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
}
intent.setDataAndType(contentUri, "
application/vnd.android.package-archive");
return intent;
}

2.5 FileUtil：

/**
* 将文件转换成uri(支持7.0)
*
* @param mContext
* @param file
* @return
*/
public static Uri getUriForFile(Context mContext, File file) {
Uri fileUri = null;
if (Build.VERSION.SDK_INT >= 24) {
fileUri = FileProvider.getUriForFile(mContext, mContext.getPackageName() + “.fileprovider”, file);
} else {
fileUri = Uri.fromFile(file);
}
return fileUri;
}