二种情况：7.0前后
1.把apk放到raw文件夹下，首先复制文件到内部存储中。
public void copyRawFile(Context context) {
try {
InputStream is = context.getResources().openRawResource(R.raw.home);
FileOutputStream fos = context.openFileOutput("home.apk",
context.MODE_PRIVATE);
// FileOutputStream fos = new FileOutputStream(mFile,context.MODE_PRIVATE);
byte[] mbyte =new byte[1024];
int len =0;
while((len = is.read(mbyte)) >0){
fos.write(mbyte,0, len);
}
is.close();
fos.flush();
fos.close();
}catch (Exception e) {
Log.d("TAG","copyRawFile: 异常了"+e.getMessage());
}
}
public void install() {
File file =new File(this.getFilesDir().getPath() + File.separator +"home.apk");
Boolean bol = isAppInstall(mContext,"air.PTClient.home");//是否已安装
if (bol)return;
setUpdateDir(file);//相关权限
Intent intent =new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Log.d("TAG","正常进行安装" + file);
intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive");
startActivity(intent);
}
private boolean isAppInstall(Context mContext, String packageName) {
PackageInfo mInfo;
try {
mInfo = mContext.getPackageManager().getPackageInfo(packageName,0);
}catch (Exception e) {
mInfo =null;
Log.i(TAG,"没有发现安装的包名");
}
if (mInfo ==null) {
return false;
}else {
return true;
}
}
/**
* @param updateDir 就是可以执行的文件
* void 修改文件的权限，可读、可写、可执行
*/
private void setUpdateDir(File updateDir) {
try {
Process p = Runtime.getRuntime().exec("chmod 777 " + updateDir);
int status = p.waitFor();
}catch (IOException e) {
e.printStackTrace();
}catch (InterruptedException e) {
e.printStackTrace();
}
}
2. 这个需要自己实测，参考几篇博文。
http://www.czhzero.com/2016/12/21/how-to-install-apk-on-Android7-0/
https://www.cnblogs.com/newjeremy/p/7294519.html
https://blog.csdn.net/liu540885284/article/details/78834971
https://www.jianshu.com/p/ad751e66f575
https://blog.csdn.net/czhpxl007/article/details/53781464