編輯：關於Android編程
首先是一個簡易的activity
下載與安裝的工具類，在這個類中要注意的是intent.addCategory("android.intent.category.DEFAULI");這個方法。有時用它會出現找不到intent的現象，可酌情使用
package cnjoanthan.updata;
import java.io.File;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Environment;
import android.util.Log;
import android.widget.Toast;
/*
* 2016年8月19日 星期五
* jonathan
* 獲取版本號和安裝apk
*/
public class MyUtils {
/*
* 獲取版本號
* return 版本號
*/
public static String getVersion(Context context){
PackageManager manager = context.getPackageManager();//PackageManager可以獲取文件的信息
Log.i("VersionUpdateUtils", "manager：" + manager);
try {
PackageInfo packageInfo = manager.getPackageInfo(context.getPackageName(), 0);
Log.i("VersionUpdateUtils", "packageInfo：" + packageInfo);
return packageInfo.versionName;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.i("VersionUpdateUtils", "MyUtilsTryAbnormal ：" + e.getMessage());
return "";
}
}
/*
* 安裝新版本
*/
public static void installApk(Activity activity){
Log.i("VersionUpdateUtils", "install activity："+activity);
try {
String path = Environment.getExternalStorageDirectory().getAbsolutePath()+ File.separator+"mobilesafe"+File.separator+"mobilesafe.apk";
// String path = "/sdcard/mobilesafe/mobilesafe.apk";
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
//添加默認分類
// intent.addCategory("android.intent.category.DEFAULI");
//設置數據類型
intent.setDataAndType(Uri.fromFile(new File(path)), "application/vnd.android.package-archive");/* Uri.fromFile(new File(path))*///Uri.parse("file://"+path)
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
activity.startActivity(intent);
// activity.startActivityForResult(intent, 0);
} catch (Exception e) {
// TODO: handle exception
Log.i("VersionUpdateUtils", "install Excepyion："+e.getMessage());
}
}
}
連接下載與解析，其中下載使用了xutile 解析JSONObject都需要jar包
package cnjoanthan.updata;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import org.json.JSONException;
import org.json.JSONObject;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Environment;
import android.os.Handler;
import android.util.Log;
import android.widget.Toast;
import cnjoanthan.updata.DownLoadUtils.MyCallBack;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
/*
* 更新更新類
*/
public class VersionUpdateUtils {
private static final String TAG = "VersionUpdateUtils";
private static final int MESSAGE_NET_ERROR = 101;
private static final int MESSAGE_IO_ERROR = 102;
private static final int MESSAGE_JSON_ERROR = 103;
private static final int MESSAGE_SHOW_DIALOG = 104;
private static final int MESSAGE_ENTERHOME = 105;
/* 本地版本號 */
private String mVersion;
private Activity context;
private VersionEntity versionEntity;
private ProgressDialog mProgressDialog;
// private Version
VersionUpdateUtils(String Version, Activity activity) {
mVersion = Version;
this.context = activity;
Log.i(TAG, "VersionUpdateUtils已重構");
}
/* 用於更新的UI */
private Handler handler = new Handler() {
public void handleMessage(android.os.Message msg) {
Log.i(TAG, "handleMessage啟動");
switch (msg.what) {
case MESSAGE_IO_ERROR:
Toast.makeText(context, "IO異常", Toast.LENGTH_SHORT).show();
enterHome();
break;
case MESSAGE_JSON_ERROR:
Toast.makeText(context, "JSON異常", Toast.LENGTH_SHORT).show();
enterHome();
break;
case MESSAGE_NET_ERROR:
Toast.makeText(context, "網絡異常", Toast.LENGTH_SHORT).show();
enterHome();
break;
case MESSAGE_SHOW_DIALOG:
Log.i(TAG, "接收到message："+MESSAGE_SHOW_DIALOG);
showUpdateDialog(versionEntity);
break;
case MESSAGE_ENTERHOME:
Toast.makeText(context, "即將跳轉", Toast.LENGTH_LONG).show();
break;
default:
break;
}
}
/**
* 彈出提示框
*
* @param versionEntity
*/
private void showUpdateDialog(final VersionEntity versionEntity) {
// TODO Auto-generated method stub
Log.i(TAG, "showUpdateDialog啟動構建");
/**
* 創建dialog
*/
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("檢測到新版本：" + versionEntity.versioncode);
builder.setMessage(versionEntity.descripting);
/** 服務器返回的描述信息 */
builder.setCancelable(false);
/** 設置手機不能點擊返回鍵 */
builder.setPositiveButton("立即升級",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
initProgressDialog();
downloadNewAPK(versionEntity.apkurl);
}
/** 下載APK */
@SuppressLint("SdCardPath") private void downloadNewAPK(String apkurl) {
Log.i(TAG, "downloadApkurl:"+apkurl);
// TODO Auto-generated method stub
String fileName = Environment.getExternalStorageDirectory().getAbsolutePath()+ File.separator+"mobilesafe"+File.separator+"mobilesafe.apk";//getExternalStorageDirectory
// String fileName = "/sdcard/mobilesafe/mobilesafe.apk";
Log.i(TAG, "fileName:"+fileName);
DownLoadUtils dowLoadUtils = new DownLoadUtils();
dowLoadUtils.downapk(apkurl,
fileName,
new MyCallBack() {
@Override
public void onSuccess(
ResponseInfo arg0) {
// TODO Auto-generated method stub
mProgressDialog.dismiss();
Log.i(TAG, "Dialog關閉");
MyUtils.installApk(context);
}
@Override
public void onLoadding(long total,
long current,
boolean isUploading) {
// TODO Auto-generated method stub
mProgressDialog.setMax((int) total);
mProgressDialog
.setMessage("正在下載...");
mProgressDialog
.setProgress((int) current);
Log.i(TAG, "onLoadding");
}
@Override
public void onFailure(
HttpException arg0, String arg1) {
// TODO Auto-generated method stub
mProgressDialog.setMessage("下載失敗");
mProgressDialog.dismiss();
enterHome();
Log.i(TAG, "onFailure->arg0:"+arg0+" arg1:"+ arg1);
}
});
}
private void initProgressDialog() {
// TODO Auto-generated method stub
Log.i(TAG, "initProgressDialog開始運行");
mProgressDialog = new ProgressDialog(context);
mProgressDialog.setMessage("准備下載...");
mProgressDialog
.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
mProgressDialog.show();
}
});
builder.setNegativeButton("暫不升級",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.dismiss();
enterHome();
}
});
builder.show();
};
};
/*
* 獲取服務器版本
*/
public void getCloudVersion() {
try {
new Thread(postThread).start();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
Log.i(TAG, "線程異常：" + e.getMessage());
}
}
private Thread postThread = new Thread() {
public void run() {
Log.i(TAG, "postThread線程啟動");
String target = "要提交的服務器的URL";
URL url;
try {
url = new URL(target);
HttpURLConnection urlConn = (HttpURLConnection) url
.openConnection();
urlConn.setRequestMethod("POST");
urlConn.setDoInput(true);
urlConn.setDoOutput(true);
urlConn.setUseCaches(true);// 禁止緩存
urlConn.setInstanceFollowRedirects(true);
urlConn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
DataOutputStream out = new DataOutputStream(
urlConn.getOutputStream());
String param = "字段="
+ URLEncoder.encode("字段值",
"UTF-8") + "&" + "第二個字段="
+ URLEncoder.encode("字段值", "UTF-8");
out.writeBytes(param);
out.flush();
out.close();
if (urlConn.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStreamReader in = new InputStreamReader(
urlConn.getInputStream(), "UTF-8");
BufferedReader buffer = new BufferedReader(in);
String inputLine = null;
while ((inputLine = buffer.readLine()) != null) {
Log.i(TAG, "inputLine:" + inputLine);
try {
JSONObject jsonObject = new JSONObject(inputLine);
Log.i(TAG,
"result_code:"
+ jsonObject
.getString("result_code"));
if ((jsonObject.getString("result_code"))
.equalsIgnoreCase("2")) {/* 服務器是否返回成功 */
JSONObject request = jsonObject
.getJSONObject("data");
versionEntity = new VersionEntity();
String code = request.getString("code");
Log.i(TAG, "code:"+code);
versionEntity.versioncode = code;
String des = request.getString("des");
Log.i(TAG, "des:"+des);
versionEntity.descripting = des;
String apkurl = request.getString("apkurl");
Log.i(TAG, "apkurl:"+apkurl);
versionEntity.apkurl = apkurl;
if (!mVersion
.equalsIgnoreCase(versionEntity.versioncode)) {
/* 版本號不一致的時候 */
handler.sendEmptyMessage(MESSAGE_SHOW_DIALOG);
Log.i(TAG, "進入版本不一致模式");
} else {
enterHome();
}
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
};
};
/* end */
private void enterHome() {
handler.sendEmptyMessageDelayed(MESSAGE_ENTERHOME, 2000);
}
}
下載的工具類
package cnjoanthan.updata;
import java.io.File;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
/*
* 下載工具類
* jonathan 2016年8月19日 星期五
*/
public class DownLoadUtils {
public void downapk(String url,String targerFile, final MyCallBack myCallBack){
//創建HttpUtils對象
HttpUtils httpUtils = new HttpUtils();
//調用HttpUtils 下載的方法下載指定文件
httpUtils.download(url, targerFile,new RequestCallBack(){
@Override
public void onFailure(HttpException arg0, String arg1) {
// TODO Auto-generated method stub
myCallBack.onFailure(arg0, arg1);
}
@Override
public void onSuccess(ResponseInfo arg0) {
// TODO Auto-generated method stub
myCallBack.onSuccess(arg0);
}
@Override
public void onLoading(long total, long current, boolean isUploading) {
// TODO Auto-generated method stub
super.onLoading(total, current, isUploading);
myCallBack.onLoadding(total, current, isUploading);
}
});
}
interface MyCallBack{
/* 下載成功時調用*/
void onSuccess(ResponseInfo arg0);
/*下載失敗時調用*/
void onFailure(HttpException arg0,String arg1);
/*下載中調用*/
void onLoadding(long total, long current, boolean isUploading);
}
}
信息實體
package cnjoanthan.updata;
import android.widget.TextView;
public class VersionEntity {
/* 服務器版本號*/
public String versioncode;
/*版本描述*/
public String descripting;
/*apk 下載地址*/
public String apkurl;
}
主函數
package cnjoanthan.updata;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
import android.widget.TextView;
public class MainActivity extends Activity {
private String mVersion;//本地版本號
private TextView mVersionTv;//應用版本號
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.i("VersionUpdateUtils", "正常");
mVersion = MyUtils.getVersion(getApplicationContext());
initView();
}
private void initView() {
// TODO Auto-generated method stub
mVersionTv = (TextView) findViewById(R.id.tv_editin_edit);
mVersionTv.setText(mVersion);
Log.i("VersionUpdateUtils", "mVersion:"+mVersion);
final VersionUpdateUtils updateUtils = new VersionUpdateUtils(mVersion,MainActivity.this);
Log.i("VersionUpdateUtils", "子線程啟動");
new Thread(){
@Override
public void run() {
// TODO Auto-generated method stub
// super.run();
Log.i("VersionUpdateUtils", "匿名子線程運行");
updateUtils.getCloudVersion();
}
}.start();
}
}
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