反正指纹拦截有点问题，有时间再学习
讲的很细，而且有时候你不开始写都不知道，一些简单的东西可以写nb的东西，练习了一下，全程Kotlin
看了米家的首页头部不错，简单实现了一下
到目前位置搞过了Android 4.2.2(MTK) 4.4.2(T3) 6.0(T3) 所以方法都是在拥有签名的情况下 一段血泪史啊，写下经验 下面6.0的方法在6.0一下是成功的，试过了
android 4.2.2 4.4.2 实现方法
1.添加aidl 只要6个就可以
IPackageDataObserver.aidl IPackageDeleteObserver.aidl IPackageInstallObserver.aidl
IPackageManager.aidl IPackageMoveObserver.aidl IPackageStatsObserver.aidl
2.权限
<manifest android:sharedUserId="android.uid.system"> //最上面
<uses-permission android:name="android.permission.INSTALL_PACKAGES" />
<uses-permission android:name="android.permission.DELETE_PACKAGES" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
3.安装
Class<?> clazz = Class.forName("android.os.ServiceManager");
Method method_getService = clazz.getMethod("getService", String.class);
IBinder bind = (IBinder) method_getService.invoke(null, "package");
IPackageManager iPm = IPackageManager.Stub.asInterface(bind);
iPm.installPackage(Uri.fromFile(apkFile), new IPackageInstallObserver.Stub(){
@Override
public void packageInstalled(String packageName, int returnCode) throws RemoteException {
}
}, 2, apkFile.getName());
4.卸载
Class<?> clazz = Class.forName("android.os.ServiceManager");
Method method_getService = clazz.getMethod("getService",String.class);
IBinder bind = (IBinder) method_getService.invoke(null, "package");
IPackageManager iPm = IPackageManager.Stub.asInterface(bind);
iPm.deletePackageAsUser(packageName,null,0,2);
5.签名再放到system/app 或者system/priv-app android6.0,被它坑了一天半
1.权限
<manifest android:sharedUserId="android.uid.system"> //最上面
<uses-permission android:name="android.permission.INSTALL_PACKAGES" />
<uses-permission android:name="android.permission.DELETE_PACKAGES" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
2.安装方法1 (最好放在线程中操作)
File file = new File(filePath);
if (filePath == null || filePath.length() == 0 || file == null) {
return 0;
}
String[] args = { "pm", "install", "-r", filePath };
ProcessBuilder processBuilder = new ProcessBuilder(args);
Process process = null;
BufferedReader successResult = null;
BufferedReader errorResult = null;
StringBuilder successMsg = new StringBuilder();
StringBuilder errorMsg = new StringBuilder();
try {
process = processBuilder.start();
successResult = new BufferedReader(new InputStreamReader(process.getInputStream()));
errorResult = new BufferedReader(new InputStreamReader(process.getErrorStream()));
String s;
while ((s = successResult.readLine()) != null) {
successMsg.append(s);
}
while ((s = errorResult.readLine()) != null) {
errorMsg.append(s);
}
} catch (IOException e1) {
e1.printStackTrace();
} finally {
try {
if (successResult != null) {
successResult.close();
}
if (errorResult != null) {
errorResult.close();
}
} catch (IOException e1) {
e1.printStackTrace();
}
if (process != null) {
process.destroy();
}
}
if (successMsg.toString().contains("Success") || successMsg.toString().contains("success")) {
return 2;
} else {
return 1;
}
2.安装方法2 (最好放在线程中操作)
----------------------源码方法---------------------------
public abstract void installPackage(Uri packageURI, IPackageInstallObserver observer,
int flags,String installerPackageName);
--------------------------------------------------------
PackageManager pm = context.getPackageManager();
Method[] methods = pm!=null?pm.getClass().getDeclaredMethods():null;
Method mDel = null;
if (methods != null && methods.length>0) {
for (Method method : methods) {
if (method.getName().toString().equals("installPackage")) {
mDel = method;
break;
}
}
}
if (mDel != null) {
mDel.setAccessible(true);
mDel.invoke(pm,Uri.fromFile(apkFile),null,2,apkFile.getName);
}
3.卸载
----------------------源码方法---------------------------
public abstract void deletePackage(String packageName,
IPackageDeleteObserver observer, int flags);
--------------------------------------------------------
PackageManager pm = context.getPackageManager();
Method[] methods = pm!=null?pm.getClass().getDeclaredMethods():null;
Method mDel = null;
if (methods != null && methods.length>0) {
for (Method method : methods) {
if (method.getName().toString().equals("deletePackage")) {
mDel = method;
break;
}
}
}
if (mDel != null) {
mDel.setAccessible(true);
mDel.invoke(pm,packageName,null,2);
}本App全部使用KotLin进行编写
使用一个RecyclerView实现复制布局
学习使用天猫的Vlayout解决不瀑流布局，很好用，性能也不错。
左图原生一个RecyclerView实现，右边为天猫Vlayout一个RecyclerView实现。
主要实现SpanSizeLookup方法
override fun onAttachedToRecyclerView(recyclerView: RecyclerView?) {
super.onAttachedToRecyclerView(recyclerView)
val manager: RecyclerView.LayoutManager = recyclerView!!.layoutManager
if (manager is GridLayoutManager) {
val gridManager: GridLayoutManager = manager
gridManager.spanSizeLookup = object : GridLayoutManager.SpanSizeLookup() {
override fun getSpanSize(position: Int): Int {
val type = getItemViewType(position)
when (type) {
BANNER , RECOMMEND_HEAD , ACTION_HEAD , ACTION_HEAD , LIST_HEAD , LIST-> return 6
NAV , RECOMMEND -> return 3
ACTION -> return 2
else -> return 6
}
}
}
}
}
- - -
重新复习了一下反射机制(过几天不用又要忘记)
安卓的注解(appcompat-v7自带)自定义好像不支持原因未查(不支持5.0以下的)
大致看了一下注解实现过程，并没有去看那些注解框架源码(Dagger2等)如何实现的。
相关资料1 相关资料2
本来Kotlin的防止非空异常是它的一个优点，在Json数据的非空判断时确实非常高效，但个人感觉有点鸡肋，有时候多了很多非空判断尤其是在已经if(x != null)里面还要判断非空!!.
kolin与DataBinding有冲突
kapt "com.android.databinding:compiler:2.2.3"
kapt {
generateStubs = true
}
虽然支持RxJava但在被订阅时onComplete()好像没有调用
方便简单速度快。
不能实现线程切换操作数据，哪里生成realm在那个线程处理。