編輯:關於Android編程
本文主要介紹程序如何利用root權限靜默安裝APK,如何自動選擇普通安裝還是靜默安裝以及擴展PackageUtils實現靜默刪除APK。
1、root權限靜默安裝調用
直接調用PackageUtils.installSlient函數(直接引入TrineaAndroidCommon@GoogleCode或TrineaAndroidCommon@Github作為你項目的library),系統授權管理會彈出對話框讓用戶選擇是否允許應用獲得root權限。允許的話即可靜默安裝。該函數返回PackageUtils.INSTALL_SUCCEEDED表示安裝成功,失敗則返回相應錯誤碼,可以得到失敗的詳細原因,包括文件不存在,apk無效,系統內存不足,簽名不正確,缺少公共庫,share
user錯誤等等判斷。
注意對於較大apk安裝過程非常耗時,所以最好新啟線程去調用PackageUtils.installSlient。
2、root權限靜默安裝實現
PackageUtils.installSlient的實現實際使用的是su
pm install -r filePath命令。核心代碼如下:
PackageUtils.installSlient的實現代碼
Java
public static final String COMMAND_SU = "su";
public static final String COMMAND_SH = "sh";
public static final String COMMAND_EXIT = "exit\n";
public static final String COMMAND_LINE_END = "\n";
public static CommandResult execCommand(String[] commands, boolean isRoot, boolean isNeedResultMsg) {
int result = -1;
if (commands == null || commands.length == 0) {
return new CommandResult(result, null, null);
}
Process process = null;
BufferedReader successResult = null;
BufferedReader errorResult = null;
StringBuilder successMsg = null;
StringBuilder errorMsg = null;
DataOutputStream os = null;
try {
process = Runtime.getRuntime().exec(isRoot ? COMMAND_SU : COMMAND_SH);
os = new DataOutputStream(process.getOutputStream());
for (String command : commands) {
if (command == null) {
continue;
}
// donnot use os.writeBytes(commmand), avoid chinese charset error
os.write(command.getBytes());
os.writeBytes(COMMAND_LINE_END);
os.flush();
}
os.writeBytes(COMMAND_EXIT);
os.flush();
result = process.waitFor();
// get command result
if (isNeedResultMsg) {
successMsg = new StringBuilder();
errorMsg = new StringBuilder();
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 e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (os != null) {
os.close();
}
if (successResult != null) {
successResult.close();
}
if (errorResult != null) {
errorResult.close();
}
} catch (IOException e) {
e.printStackTrace();
}
if (process != null) {
process.destroy();
}
}
return new CommandResult(result, successMsg == null ? null : successMsg.toString(), errorMsg == null ? null
: errorMsg.toString());
}
public static final String COMMAND_SU = "su";
public static final String COMMAND_SH = "sh";
public static final String COMMAND_EXIT = "exit\n";
public static final String COMMAND_LINE_END = "\n";
public static CommandResult execCommand(String[] commands, boolean isRoot, boolean isNeedResultMsg) {
int result = -1;
if (commands == null || commands.length == 0) {
return new CommandResult(result, null, null);
}
Process process = null;
BufferedReader successResult = null;
BufferedReader errorResult = null;
StringBuilder successMsg = null;
StringBuilder errorMsg = null;
DataOutputStream os = null;
try {
process = Runtime.getRuntime().exec(isRoot ? COMMAND_SU : COMMAND_SH);
os = new DataOutputStream(process.getOutputStream());
for (String command : commands) {
if (command == null) {
continue;
}
// donnot use os.writeBytes(commmand), avoid chinese charset error
os.write(command.getBytes());
os.writeBytes(COMMAND_LINE_END);
os.flush();
}
os.writeBytes(COMMAND_EXIT);
os.flush();
result = process.waitFor();
// get command result
if (isNeedResultMsg) {
successMsg = new StringBuilder();
errorMsg = new StringBuilder();
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 e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (os != null) {
os.close();
}
if (successResult != null) {
successResult.close();
}
if (errorResult != null) {
errorResult.close();
}
} catch (IOException e) {
e.printStackTrace();
}
if (process != null) {
process.destroy();
}
}
return new CommandResult(result, successMsg == null ? null : successMsg.toString(), errorMsg == null ? null
: errorMsg.toString());
}
3、普通安裝,系統權限靜默安裝,root權限靜默安裝的自動選擇
查看PackageUtils源碼會發現我還提供了其他幾個安裝函數,其中PackageUtils.install函數會根據是否是系統應用以及是否擁有root權限,從而確定調用哪種安裝方式(普通安裝方式、root靜默安裝方式還是系統權限靜默安裝),源碼如下:
Java
/**
* install according conditions
*
*
if system application or rooted, see {@link #installSilent(Context, String)}
*
else see {@link #installNormal(Context, String)}
*
*
* @param context
* @param filePath
* @return
*/
public static final int install(Context context, String filePath) {
if (!PackageUtils.isSystemApplication(context)) {
boolean isRoot = ShellUtils.checkRootPermission();
if (!isRoot) {
return installNormal(context, filePath) ? INSTALL_SUCCEEDED : INSTALL_FAILED_INVALID_URI;
}
}
return installSilent(context, filePath);
}
/**
* install according conditions
*
*
if system application or rooted, see {@link #installSilent(Context, String)}
*
else see {@link #installNormal(Context, String)}
*
*
* @param context
* @param filePath
* @return
*/
public static final int install(Context context, String filePath) {
if (!PackageUtils.isSystemApplication(context)) {
boolean isRoot = ShellUtils.checkRootPermission();
if (!isRoot) {
return installNormal(context, filePath) ? INSTALL_SUCCEEDED : INSTALL_FAILED_INVALID_URI;
}
}
return installSilent(context, filePath);
}
沒有時間實現靜默卸載應用的代碼,不過原理都一樣,請參考PackageUtils.installSlient編寫root權限靜默刪除應用代碼。使用pm uninstall [-k] PACKAGE命令即可。
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