其实很简单，只需要几行代码就好了，首先要到服务器下载apk，然后才能安装，当然不是傻子应该都知道，我这里用到的是Httputils去下载，
这里需要一些权限
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.INSTALL_PACKAGES"/>
直接贴代码
package com.exmple.httpxutil;
import java.io.File;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.Signature;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.HttpHandler;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
public class MainActivity extends Activity {
HttpHandler<File> h;
private ProgressBar pa;
@SuppressLint("SdCardPath")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = (Button) findViewById(R.id.button);
pa = (ProgressBar) findViewById(R.id.pro);
Button more = (Button) findViewById(R.id.more);
getCode();
more.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent ints = new Intent(MainActivity.this, NewActivity.class);
startActivity(ints);
}
});
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
HttpUtils http = new HttpUtils();
final String path = Environment.getExternalStorageDirectory()
.getPath();
System.out.println(path);
h = http.download(
"http://101.200.142.201:8080/tqyb/baidumap.apk", path
+ "/badumap.apk", true, true,
new RequestCallBack<File>() {
@Override
public void onStart() {
System.out.println("===");
System.out.println("开始下载了++++++++++++++");
}
@Override
public void onLoading(long total, long current,
boolean isUploading) {
System.out.println(total + "=====");
System.out.println(current + "=====");
System.out.println(isUploading + "=====");
pa.setMax((int) total);
pa.setProgress((int) current);
}
@Override
public void onFailure(HttpException error,
String msg) {
System.out.println(error + "+++++++" + msg
+ "+++++++++");
}
@Override
public void onSuccess(
ResponseInfo<File> responseInfo) {
h.cancel();
installApk(path + "/badumap.apk");
}
});
}
});
}
//安装的方法
private void installApk(String filename) {
File file = new File(filename);
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction(Intent.ACTION_VIEW);
String type = "application/vnd.android.package-archive";
intent.setDataAndType(Uri.fromFile(file), type);
startActivity(intent);
}
//等到版本号的代码
private void getCode() {
PackageManager manager;
PackageInfo info = null;
manager = this.getPackageManager();
try {
info = manager.getPackageInfo(this.getPackageName(), 0);
String name = info.versionName;
int versionCode = info.versionCode;
String packageName = info.packageName;
Signature[] signatures = info.signatures;
System.out.println(name + "++++++++++" + versionCode + "+++++"
+ packageName + "========nnn" + signatures
+ "=============");
/*
* info.versionName;
*
* info.packageName;
*
* info.signatures;
*/
} catch (NameNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}