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我制作了一个安装在 Android 系统中的应用程序，我的应用程序使用本机库，我尝试使用此代码加载本机库：

//Load Libffmpeg
                try {
                    if (new File("/data/data/"+ packageName +"/lib/"+ "libffmpeg-linphone-" + ffmpegAbi+".so").exists()) {
                        System.load("/data/data/"+ packageName +"/lib/"+ "libffmpeg-linphone-" + ffmpegAbi+".so");
                    }else if(new File("/system/lib/"+ "libffmpeg-linphone-" + ffmpegAbi+".so").exists()){
                        System.load("/system/lib/"+ "libffmpeg-linphone-" + ffmpegAbi+".so");
                    } else if(new File("/system/app/"+ packageName +"/lib/"+ "libffmpeg-linphone-" + ffmpegAbi+".so").exists()){
                        System.load("/system/app/"+ packageName +"/lib/"+ "libffmpeg-linphone-" + ffmpegAbi+".so");
                    }else {
                        System.loadLibrary("ffmpeg-linphone-" + ffmpegAbi);
                    }
                } catch (Throwable e) {
                    Log.w("LinphoneCoreFactoryImpl", "Unable to load optional library lib" + "ffmpeg-linphone-" + ffmpegAbi);
                }

                //Load Main Library
                try {
                    if (new File("/data/data/"+ packageName +"/lib/"+ "linphone-" + abi+".so").exists()) {
                        System.load("/data/data/"+ packageName +"/lib/"+ "linphone-" + abi+".so");
                    }else if(new File("/system/lib/"+ "linphone-" + abi+".so").exists()){
                        System.load("/system/lib/"+ "linphone-" + abi+".so");
                    } else if(new File("/system/app/"+ packageName +"/lib/"+ "linphone-" + abi+".so").exists()){
                        System.load("/system/app/"+ packageName +"/lib/"+ "linphone-" + abi+".so");
                    }else {
                        System.loadLibrary("linphone-" + abi);
                    }
                    Log.i("LinphoneCoreFactoryImpl", "Loading done with " + abi);
                    libLoaded=true;
                    break;
                }catch(Throwable e) {
                    if (firstException == null) firstException=e;
                }

起初出现此错误：

java.lang.RuntimeException：java.lang.UnsatisfiedLinkError：dlopen 失败：无法映射“/system/lib/liblinphone-armeabi-v7a.so”段 2：权限被拒绝

之后我尝试输入这段代码：

try {
                    process = Runtime.getRuntime().exec("su");
                    dataOutputStream = new DataOutputStream(process.getOutputStream());
                    dataOutputStream.writeBytes("chmod 644 /system/lib/\n");
                    dataOutputStream.writeBytes("exit\n");
                    dataOutputStream.flush();
                    process.waitFor();
                } catch (Exception e) {

                } finally {
                    try {
                        if (dataOutputStream != null) {
                            dataOutputStream.close();
                        }
                        process.destroy();
                    } catch (Exception e) {
                    }
                }

但是同样的错误又出现了，是系统中的android应用程序无法访问系统/库还是我的代码错误？

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0 回答 0