获取网络软件更新信息 并发送消息 通知 handler 更新UI
private void checkUpdate() {
new Thread() {
public void run() {
long currentTime = System.currentTimeMillis();
Message msg = Message.obtain();
try {
URL url = new URL(getString(R.string.serverurl));
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(4000);
int code = conn.getResponseCode();
if (code == 200) {
// 联网成功
InputStream is = conn.getInputStream();
String infoString = StreamTools.readFromStream(is);
// System.out.println("联网成功--------->"+infoString);
JSONObject jsonObject = new JSONObject(infoString);
String version = jsonObject.optString("version");
description = jsonObject.optString("description");
apkurl = jsonObject.optString("apkurl");
System.out.println("----->" + version + description
+ apkurl);
// 校验是否有新版本
if (getVersionName().equals(version)) {
// 版本一致 进入主页面
msg.what = GOTO_HOME;
} else {
// 更新版本 弹出对话框提示
msg.what = UPDATE_VERSION;
}
}
} catch (MalformedURLException e) {
msg.what = URL_ERROR;
e.printStackTrace();
} catch (IOException e) {
msg.what = IO_ERROR;
e.printStackTrace();
} catch (JSONException e) {
msg.what = JSON_ERROR;
e.printStackTrace();
} finally {
long endTime = System.currentTimeMillis();
long time = currentTime - endTime;
if (time < 2000) {
try {
Thread.sleep(2000 - time);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
handler.sendMessage(msg);
}
};
}.start();
}
//弹出更新对话框
/**
* 弹出升级对话框
* */
protected void showUpdateDialog() {
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("有新版本！！");
// builder.setCancelable(false);
builder.setMessage(description);
builder.setNegativeButton("下次再说", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
gotoHome();
}
});
builder.setPositiveButton("立刻升级", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 进行升级
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
// 下载软件并安装
FinalHttp finalHttp = new FinalHttp();
finalHttp.download(apkurl, Environment
.getExternalStorageDirectory().getAbsolutePath()
+ "/mobiesafe2.0.apk", new AjaxCallBack<File>() {
@Override
public void onFailure(Throwable t, int errorNo,
String strMsg) {
t.printStackTrace();
Toast.makeText(getApplicationContext(), "下载失败了", 1).show();
super.onFailure(t, errorNo, strMsg);
}
@Override
public void onLoading(long count, long current) {
int progress = (int) (current/count*100);
tv_update_info.setText("下载进度： "+progress+"%");
super.onLoading(count, current);
}
@Override
public void onSuccess(File t) {
Toast.makeText(getApplicationContext(), "成功", 0).show();
installApk(t);
super.onSuccess(t);
}
private void installApk(File t) {
Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
intent.setDataAndType(Uri.fromFile(t),
"application/vnd.android.package-archive");
startActivity(intent);
}
});
} else {
Toast.makeText(getApplicationContext(), "sd卡不存在", 0).show();
gotoHome();
}
}
});
builder.setOnCancelListener(new OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
gotoHome();
dialog.dismiss();
}
});
builder.show();
}
文件下载 使用afinal框架 也可以使用Xutils 但是这里 没使用 日后 使用试试
弹出框 使用
AlertDialog.Builder // 其中 要使其点击返回按钮 跳转 要 监听 他的 <span style="font-family: Arial, Helvetica, sans-serif;">setOnCancelListener事件 </span>
<span style="font-family: Arial, Helvetica, sans-serif;"> </span>
//下载完成后 安装apk 其实 就是启动一个Intent 卸载也是一样
//Intent如下
private void installApk(File t) {
<span style="white-space:pre"> </span>Intent intent = new Intent();
<span style="white-space:pre"> </span>intent.setAction("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
<span style="white-space:pre"> </span>intent.setDataAndType(Uri.fromFile(t),
"application/vnd.android.package-archive"); <span style="white-space:pre"> </span>startActivity(intent); }