方式是将应用设置为内置的系统应用，注意事system/app目录下面，采用copy2SystemApp()方法就可以，注意chmod 777的权限，若是直接将apk拷贝到system/app目录，没有这个权限还是不能静默安装的。
直接贴出工具类：
public class ApkController {
/**
* 描述: 安装
*/
public static boolean install(String apkPath,Context context){
// 先判断手机是否有root权限
if(hasRootPerssion()){
// 有root权限，利用静默安装实现
return clientInstall(apkPath);
}else{
// 没有root权限，利用意图进行安装
File file = new File(apkPath);
if(!file.exists())
return false;
Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive");
context.startActivity(intent);
return true;
}
}
/**
* 描述: 卸载
*/
public static boolean uninstall(String packageName,Context context){
if(hasRootPerssion()){
// 有root权限，利用静默卸载实现
return clientUninstall(packageName);
}else{
Uri packageURI = Uri.parse("package:" + packageName);
Intent uninstallIntent = new Intent(Intent.ACTION_DELETE,packageURI);
uninstallIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(uninstallIntent);
return true;
}
}
/**
* 判断手机是否有root权限
*/
public static boolean hasRootPerssion(){
PrintWriter PrintWriter = null;
Process process = null;
try {
process = Runtime.getRuntime().exec("su");
PrintWriter = new PrintWriter(process.getOutputStream());
PrintWriter.flush();
PrintWriter.close();
int value = process.waitFor();
return returnResult(value);
} catch (Exception e) {
e.printStackTrace();
}finally{
if(process!=null){
process.destroy();
}
}
return false;
}
/**
* 静默安装
*/
public static boolean clientInstall(String apkPath){
PrintWriter PrintWriter = null;
Process process = null;
try {
process = Runtime.getRuntime().exec("su");
PrintWriter = new PrintWriter(process.getOutputStream());
PrintWriter.println("chmod 777 "+apkPath);
PrintWriter.println("export LD_LIBRARY_PATH=/vendor/lib:/system/lib");
PrintWriter.println("pm install -r "+apkPath);
// PrintWriter.println("exit");
PrintWriter.flush();
PrintWriter.close();
int value = process.waitFor();
return returnResult(value);
} catch (Exception e) {
e.printStackTrace();
}finally{
if(process!=null){
process.destroy();
}
}
return false;
}
/**
* 静默卸载
*/
public static boolean clientUninstall(String packageName){
PrintWriter PrintWriter = null;
Process process = null;
try {
process = Runtime.getRuntime().exec("su");
PrintWriter = new PrintWriter(process.getOutputStream());
PrintWriter.println("LD_LIBRARY_PATH=/vendor/lib:/system/lib ");
PrintWriter.println("pm uninstall "+packageName);
PrintWriter.flush();
PrintWriter.close();
int value = process.waitFor();
return returnResult(value);
} catch (Exception e) {
e.printStackTrace();
}finally{
if(process!=null){
process.destroy();
}
}
return false;
}
/**
* 启动app
* com.exmaple.client/.MainActivity
* com.exmaple.client/com.exmaple.client.MainActivity
*/
public static boolean startApp(String packageName,String activityName){
boolean isSuccess = false;
String cmd = "am start -n " + packageName + "/" + activityName + " \n";
Process process = null;
try {
process = Runtime.getRuntime().exec(cmd);
int value = process.waitFor();
return returnResult(value);
} catch (Exception e) {
e.printStackTrace();
} finally{
if(process!=null){
process.destroy();
}
}
return isSuccess;
}
/**
* 将文件复制到system/app 目录
* @param apkPath 特别注意格式：该路径不能是：/storage/emulated/0/app/QDemoTest4.apk 需要是：/sdcard/app/QDemoTest4.apk
* @return
*/
public static boolean copy2SystemApp(String apkPath){
PrintWriter PrintWriter = null;
Process process = null;
String appName = "chetou.apk",cmd;
try {
process = Runtime.getRuntime().exec("su");
PrintWriter = new PrintWriter(process.getOutputStream());
cmd = "mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system";
Log.e("copy2SystemApp", cmd);
PrintWriter.println(cmd);
cmd = "cat "+apkPath+" > /system/app/"+appName;
Log.e("copy2SystemApp", cmd);
PrintWriter.println(cmd);
cmd = "chmod 777 /system/app/"+appName +" -R";
Log.e("copy2SystemApp", cmd);
PrintWriter.println(cmd);
cmd = "mount -o remount,ro -t yaffs2 /dev/block/mtdblock3 /system";
Log.e("copy2SystemApp", cmd);
PrintWriter.println(cmd);
PrintWriter.println("reboot"); //重启
PrintWriter.println("exit");
PrintWriter.flush();
PrintWriter.close();
int value = process.waitFor();
return returnResult(value);
} catch (Exception e) {
e.printStackTrace();
}finally{
if(process!=null){
process.destroy();
}
}
return false;
}
private static boolean returnResult(int value){
// 代表成功
if (value == 0) {
return true;
} else if (value == 1) { // 失败
return false;
} else { // 未知情况
return false;
}
}
}