35 AndroidオンラインAPKインストール


HttpUtilsツールクラス:

package com.example.android_apk_install;

import java.io.File;
import java.io.FileOutputStream;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;

import android.os.Environment;

public class HttpUtils {

	public HttpUtils()
	{
		
	}
	public static String getMessage(String path)
	{
		String str=null;
		HttpClient httpClient=new DefaultHttpClient();
		HttpGet httpGet=new HttpGet(path);
		try {
			HttpResponse response=httpClient.execute(httpGet);
			if(response.getStatusLine().getStatusCode()==200)
			{
				String jsonStr=EntityUtils.toString(response.getEntity());
				JSONObject jsonObject=new JSONObject(jsonStr);
				str=jsonObject.getString("versionname");
			}
		} catch (Exception e) {
			// TODO: handle exception
		}finally{
			httpClient.getConnectionManager().shutdown();
		}
		return str;
	}
	
	
	/**
	 *   APK  ,   sdcard 
	 * @param path
	 * @return     
	 */
	public static  String downLoadAPK(String path)
	{
		byte[] data=null;
		HttpClient httpClient =new DefaultHttpClient();
		File file=Environment.getExternalStorageDirectory();
		FileOutputStream outputStream=null;
		HttpGet httpGet=new HttpGet(path);
		try {
			HttpResponse response=httpClient.execute(httpGet);
			if (response.getStatusLine().getStatusCode()==200) {
				data=EntityUtils.toByteArray(response.getEntity());
				
				if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
				{
					//     
					outputStream=new FileOutputStream(new File(file, "abc.apk"));
					outputStream.write(data, 0, data.length);
				}
			}
		} catch (Exception e) {
			// TODO: handle exception
		}finally{
			if(outputStream != null)
			{
				try {
					outputStream.close();
					
				} catch (Exception e2) {
					// TODO: handle exception
					e2.printStackTrace();
				}
			}
		}
		return file.getAbsolutePath()+"/"+"abc.apk" ;
		
		
	}
}

PackageUtilsツールクラス

package com.example.android_apk_install;

import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
/**
 *     
 * @author Administrator
 *
 */
public class PackageUtils {
	private Context context;
	private PackageManager manager;
	private PackageInfo info;

	public PackageUtils(Context context) {
		this.context = context;
		init();
	}

	/**
	 *      
	 */
	public void init() {
		manager = context.getPackageManager();
		try {
			info = manager.getPackageInfo(context.getPackageName(),
					PackageManager.GET_ACTIVITIES);

		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}

	}
	
	public int getVersionCode()
	{
		return info.versionCode;
	}
	/**
	 * 
	 * @return
	 */
	public String getVersionName()
	{
		return info.versionName;
	}
	/**
	 *       
	 * @param oldVersion
	 * @param newVersion
	 * @return
	 */
	public boolean isUpgrada(int oldVersion,int newVersion)
	{
		boolean flag = false;
		flag = newVersion > oldVersion ? true : false;
		return flag;
	}
}

アクセス権:

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.INTERNET"/>

MainActivity.JAvaコード:

package com.example.android_apk_install;

import java.io.File;
import java.io.FileOutputStream;
import java.util.concurrent.ExecutionException;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends Activity {

	PackageUtils utils;
	private ProgressDialog dialog;
	private AlertDialog.Builder builder;
	private String path="http://........................";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		builder=new AlertDialog.Builder(this);
		builder.setTitle("   ");
		builder.setMessage("     ，      ");
		builder.setPositiveButton("  ", new OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				
			}
		});
		builder.setNegativeButton("  ", new OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				
			}
		});
		utils=new PackageUtils(this);
		int currVersionCode=utils.getVersionCode();
		dialog=new ProgressDialog(this);
		dialog.setTitle("  ");
		dialog.setMessage("Loading...");
		//      
		try {
			new MyTask().execute(path).get();
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ExecutionException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
	
	public class DownLoadAPK extends AsyncTask< String, Void, Void>
	{
		@Override
		protected void onPreExecute() {
			// TODO Auto-generated method stub
			super.onPreExecute();
			dialog.show();
		}

		@Override
		protected Void doInBackground(String... params) {
			// TODO Auto-generated method stub
			String pathStr=HttpUtils.downLoadAPK(params[0]);
			System.out.println("---->>"+pathStr);
			if(pathStr != null)
			{
				//"/mnt/sdcard//abc.apk"
				Uri uri=Uri.fromFile(new File(pathStr));
				Intent intent=new Intent(Intent.ACTION_VIEW);
				intent.setDataAndType(uri, "application/vnd.android.package-archive");
				startActivity(intent);
				
			}
			
			return null;
		}
		
		@Override
		protected void onPostExecute(Void result) {
			// TODO Auto-generated method stub
			super.onPostExecute(result);
		}
		
	}
	
	/**
	 *         
	 * @author Administrator
	 *
	 */
	class MyTask extends AsyncTask<String, Void, String>
	{
		
		@Override
		protected void onPreExecute() {
			// TODO Auto-generated method stub
			super.onPreExecute();
			dialog.show();
		}

		@Override
		protected String doInBackground(String... params) {
			// TODO Auto-generated method stub
			//  
			return HttpUtils.getMessage(params[0]);
		
		}
		@Override
		protected void onPostExecute(String result) {
			// TODO Auto-generated method stub
			super.onPostExecute(result);
			dialog.dismiss();
		}
		
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}