是的,如果您具有 root 访问权限,则可以执行此操作。这是一个漫长的过程,但您可以这样做:
第 1 步: 使用设备中的RootBrowser 从/data/data/com.android.providers.settings/databases/ 复制settings.db,然后使用要更新的sqliteBrowser 更改值,而不是更新 settings.db 并放入assets 项目包
第 2 步: 将此文件复制到您的应用程序文件夹(您可以访问的任何地方),使用 asset manager 来满足您的需要
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
此函数将从资产中复制文件
public static void copyAssets(Context context, String assetPath, String outFilename) {
AssetManager assetManager = context.getAssets();
InputStream in = null;
OutputStream out = null;
try {
in = assetManager.open(assetPath);
File outFile = new File(context.getExternalFilesDir(null), outFilename);
out = new FileOutputStream(outFile);
copyFile(in, out);
} catch (IOException e) {
Log.e(TAG, "Failed to copy asset: " + outFilename, e);
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
}
}
}
}
public static void copyFile(InputStream in, OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
int read;
while ((read = in.read(buffer)) != -1) {
out.write(buffer, 0, read);
}
}
第三步:覆盖系统settings.db文件系统路径(destPath)为/data/data/com.android.providers.settings/databases/
public static void copyToSystem(final String sourceFilePath, final String destPath) {
Thread background = new Thread(new Runnable() {
@Override
public void run() {
try {
Process process = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(process.getOutputStream());
//
os.writeBytes("cp -f " + sourceFilePath + " " + destPath + "\n");
os.flush();
os.writeBytes("exit\n");
os.flush();
process.waitFor();
process.waitFor();
} catch (InterruptedException e) {
e.printStackTrace();
Log.e(TAG, e.toString());
} catch (IOException e) {
e.printStackTrace();
Log.e(TAG, e.toString());
}
}
});
background.start();
}
第 4 步:重启设备
到此为止。