App更新策略课程-检查更新实现

 // 这里替换你的服务器域名
    public static final String DOMAIN = "http://www.infzm.com/";
    // url, 检查更新API
    public static final String CHECK_UPDATE = DOMAIN
            + "mobilesource/goal/app.config.php";

    /**
     * 检查更新
     * 
     * @param params
     * @param responseHandler
     */
    public RequestHandle checkUpdate(RequestParams params,
                                     AsyncHttpResponseHandler responseHandler) {
        LogUtils.e("checkUpdate", URLHelper.CHECK_UPDATE + "?" + params);        return client.get(URLHelper.CHECK_UPDATE, params, responseHandler);

package com.devilwwj.updateapkdemo.update;import android.app.ProgressDialog;import android.content.Context;import android.util.Log;import android.widget.Toast;import com.devilwwj.updateapkdemo.GlobalSettings;import com.devilwwj.updateapkdemo.R;import com.devilwwj.updateapkdemo.utils.Utils;import com.loopj.android.http.JsonHttpResponseHandler;import org.apache.http.Header;import org.json.JSONException;import org.json.JSONObject;import java.util.Map;/**
 * 检查更新的句柄
 * @author wwj_748
 *
 */public class CheckUpdateAsyncHandler extends JsonHttpResponseHandler{    private Context mContext;    private ProgressDialog progressDialog;

    OnCheckUpdateListener checkUpdateListener;    interface OnCheckUpdateListener {        void onSuccess(UpdateInfo updateInfo);        void onFailure();
    }    public CheckUpdateAsyncHandler(Context context, OnCheckUpdateListener onCheckUpdateListener) {        this.mContext = context;        this.checkUpdateListener = onCheckUpdateListener;
        progressDialog = new ProgressDialog(mContext);
        progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        progressDialog.setMessage(mContext.getString(R.string.tip_requesting));
        progressDialog.setCancelable(true);
    }    @Override
    public void onStart() {        super.onStart();
        progressDialog.show();
    }    @Override
    public void onFailure(int statusCode, Header[] headers,
            Throwable throwable, JSONObject errorResponse) {        super.onFailure(statusCode, headers, throwable, errorResponse);
        Map<String, Object> versionInfoMap = GlobalSettings
                .getNewVersionInfo(mContext);        boolean canUpdate = (Boolean) versionInfoMap.get("updatable");        if (canUpdate) {
                progressDialog.dismiss();
                Toast.makeText(mContext, "连接失败，请稍后重试",
                        Toast.LENGTH_SHORT).show();
        } else {
                progressDialog.dismiss();
        }

        checkUpdateListener.onFailure();
    }    @Override
    public void onSuccess(int statusCode, Header[] headers, JSONObject response) {        super.onSuccess(statusCode, headers, response);
        Log.d("updateInfo", response.toString());        try {
            JSONObject firstObject = (JSONObject) response.get("android_ireader");            // 最新版本号
            String versionName = firstObject.optString("app_version");            // 版本号
            int versionCode = firstObject.optInt("version_code");
            versionCode = 47;            // 更新内容
            String features = firstObject.getString("features");            // sdk版本
            String sdkVersion = firstObject.optString("sdk_version");            // 系统版本
            String osVersion = firstObject.optString("os_version");            // 获取当前版本号
            int currentVersionCode = Utils.getAppVersionCode(mContext);            // apk下载地址
            String url = firstObject.optString("update_url");            boolean isCanUpdate;            // 获取上次强制更新的版本——last_force_update
            int last_force_update_version = firstObject.optInt("last_force_update_version");            if (currentVersionCode < last_force_update_version) {
                isCanUpdate = true;
            } else {                if (versionCode <= currentVersionCode) {
                    isCanUpdate = false;
                } else {
                    isCanUpdate = true;
                }
            }            // 保存更新信息到sharedPerences
            GlobalSettings.saveNewVersionInfo(mContext, versionName, url, features, isCanUpdate);
            UpdateInfo updateInfo = new UpdateInfo();
            updateInfo.setVersionName(versionName);
            updateInfo.setVersionCode(versionCode);
            updateInfo.setFeatures(features);
            updateInfo.setSdkVersion(sdkVersion);
            updateInfo.setOsVersion(osVersion);
            updateInfo.setUpdateUrl(url);
            updateInfo.setLastForceUpdate(last_force_update_version);

            checkUpdateListener.onSuccess(updateInfo);

        } catch(JSONException e) {
            e.printStackTrace();
        }
    }    @Override
    public void onFinish() {        super.onFinish();
        progressDialog.dismiss();
    }    @Override
    public void onCancel() {        super.onCancel();
        progressDialog.cancel();
    }
}

package com.devilwwj.update.http;

import android.content.Context;

/**
 * com.devilwwj.update.http
 * Created by devilwwj on 16/4/5.
 */
public class AppUpdateManager {
    private Context mContext;

    private static AppUpdateManager instance;

    public static AppUpdateManager getInstance(Context context) {
        if (instance == null) {
            synchronized (AppUpdateManager.class) {
                instance = new AppUpdateManager(context);
            }
        }
        return instance;
    }

    public AppUpdateManager(Context context) {
        this.mContext = context;
    }

    public void checkUpdate() {
        HttpRequestHelper.getInstance().checkUpdate(null, new CheckUpdateAsyncHandler(mContext))
    }

}

public class MainActivity extends AppCompatActivity {    private Button btnCheckUpdate;    @Override
    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnCheckUpdate = (Button) findViewById(R.id.btn_checkupdate);

        btnCheckUpdate.setOnClickListener(new View.OnClickListener() {            @Override
            public void onClick(View v) {                // 这里去检查更新
                AppUpdateManager.getInstance(MainActivity.this).checkUpdate();

            }
        });
    }

}