android apk静默安装和卸载
静默安装:
在某个触发点自动后台安装指定apk.没有安装界面.新软件自动安装,有旧版本的默默卸载,然后再安装,并且在不受系统设置中的第三方软件安装开关的限制.
自己跟踪记录的源码流程
Filemanager中点击apk包之后发送了一个intent出去
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Android会去系统中的packagemanager中查询哪个apk能响应这个操作.
找到PackageInstaller这个apk.文件路劲位于packages\apps\PackageInstaller
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系统会启动这个Activity来进行安装操作
本文档只贴出具体安装的过程,舍弃ui操作,并加以简单说明
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好了.回归主题.静默安装的关键代码已经出来了.只有一行
pm.installPackage(mPackageURI,observer, installFlags(0), installerPackageName);
看源码中该函数说明必须要加上android.Manifest.permission#INSTALL_PACKAGES才行,此权限只有system应用才能使用.所以此应用必须放入system/app下,才能保证其有效.方法就是反射
静默安装的第一种方法:
package com.tnt.autoinstall;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
public class MainActivity extends Activity {
private Uri packageUri;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
packageUri = getPackageUri();
install();
}
private void install()
{
try {
Class<?> pmService;
Class<?> activityTherad;
Method method;
activityTherad = Class.forName("android.app.ActivityThread");
Class<?> paramTypes[] = getParamTypes(activityTherad , "getPackageManager");
method = activityTherad.getMethod("getPackageManager", paramTypes);
Object PackageManagerService = method.invoke(activityTherad);
pmService = PackageManagerService.getClass();
Class<?> paramTypes1[] = getParamTypes(pmService , "installPackage");
method = pmService.getMethod("installPackage", paramTypes1);
method.invoke(PackageManagerService , packageUri , null , 0 , null);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}catch (ClassNotFoundException e1) {
e1.printStackTrace();
}
}
private Class<?>[] getParamTypes(Class<?> cls, String mName) {
Class<?> cs[] = null;
Method[] mtd = cls.getMethods();
for (int i = 0; i < mtd.length; i++) {
if (!mtd[i].getName().equals(mName)) {
continue;
}
cs = mtd[i].getParameterTypes();
}
return cs;
}
private Uri getPackageUri()
{
File file = new File("/storage/sdcard0/download/1.apk");
return Uri.fromFile(file);
}
}
静默安装的第二种方法:
通过adb命令的方式来处理,代码如下,把上面的install函数替换下面代码
private boolean install()
{
String[] args = {"pm", "install", "-r", packageUri.getPath()};
String result = null;
ProcessBuilder processBuilder = new ProcessBuilder(args);;
Process process = null;
InputStream errIs = null;
InputStream inIs = null;
try{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int read = -1;
process = processBuilder.start();
errIs = process.getErrorStream();
while((read = errIs.read()) != -1){
baos.write(read);
}
baos.write('\n');
inIs = process.getInputStream();
while((read = inIs.read()) != -1){
baos.write(read);
}
byte[] data = baos.toByteArray();
result = new String(data);
}catch(Exception e){
e.printStackTrace();
}finally{
try{
if(errIs != null){
errIs.close();
}
if(inIs != null){
inIs.close();
}
}catch(Exception e){
e.printStackTrace();
}
if(process != null){
process.destroy();
}
}
if(result != null && (result.endsWith("Success")||result.endsWith("Success\n")))
{
return true;
}
return false;
}
下面看下卸载过程
同样的.需要增加一个权限android:name="android.permission.DELETE_PACKAGES".放入system/app中.
卸载方式一:adb shell pm方式
private void uninstall2() {
String[] args = { "pm", "uninstall", "com.popcap.pvzthird" };
String result = null;
ProcessBuilder processBuilder = new ProcessBuilder(args);
;
Process process = null;
InputStream errIs = null;
InputStream inIs = null;
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int read = -1;
process = processBuilder.start();
errIs = process.getErrorStream();
while ((read = errIs.read()) != -1) {
baos.write(read);
}
baos.write('\n');
inIs = process.getInputStream();
while ((read = inIs.read()) != -1) {
baos.write(read);
}
byte[] data = baos.toByteArray();
result = new String(data);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (errIs != null) {
errIs.close();
}
if (inIs != null) {
inIs.close();
}
} catch (Exception e) {
e.printStackTrace();
}
if (process != null) {
process.destroy();
}
}
}
卸载方式二:反射调用系统函数
Class<?> pmService;
Class<?> activityTherad;
Method method;
activityTherad = Class.forName("android.app.ActivityThread");
Class<?> paramTypes[] = getParamTypes(activityTherad,
"getPackageManager");
method = activityTherad.getMethod("getPackageManager", paramTypes);
Object PackageManagerService = method.invoke(activityTherad);
pmService = PackageManagerService.getClass();
Class<?> paramTypes1[] = getParamTypes(pmService, "deletePackage");
method = pmService.getMethod("deletePackage", paramTypes1);
method.invoke(PackageManagerService, "com.popcap.pvzthird", null, 0);