安卓系统静默安装apk

平台：IMX6

OS:    安卓4.4.2

前言：

  最近做了一个项目，不要安装的交互界面，因为系统里面添加了客户的apk,需要远程更新，所以不能有操作的步骤。在网上找了好多资料，都没找到静默安装是怎么修改源码。都是些分析啥的。分析的我就不在这里赘述了。

要去掉的交互界面：

我们要修改的文件：

./packages/apps/PackageInstaller/src/com/android/packageinstaller/InstallAppProgress.java

./packages/apps/PackageInstaller/src/com/android/packageinstaller/PackageInstallerActivity.java

调用执行关系：

onCreat(PackageInstallerActivity.java里的)

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   initiateInstall()

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startInstallConfirm()这个方法显示了安装窗口的应用信息、权限列表、安装、取消按钮等，我们安装时看见的权限信息

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在startInstallConfirm方法里，当我们按下安装或者取消的时候就会去调用 onClick方法，根据View来判断是安装还是取消安装。

onClick源代码：

public void onClick(View v) {
        if(v == mOk) {
            if (mOkCanInstall || mScrollView == null) {
                // Start subactivity to actually install the application
                mInstallFlowAnalytics.setInstallButtonClicked();
                Intent newIntent = new Intent();
                newIntent.putExtra(PackageUtil.INTENT_ATTR_APPLICATION_INFO,
                        mPkgInfo.applicationInfo);
                newIntent.setData(mPackageURI);
                newIntent.setClass(this, InstallAppProgress.class);
                newIntent.putExtra(InstallAppProgress.EXTRA_MANIFEST_DIGEST, mPkgDigest);
                newIntent.putExtra(
                        InstallAppProgress.EXTRA_INSTALL_FLOW_ANALYTICS, mInstallFlowAnalytics);
                String installerPackageName = getIntent().getStringExtra(
                        Intent.EXTRA_INSTALLER_PACKAGE_NAME);
                if (mOriginatingURI != null) {
                    newIntent.putExtra(Intent.EXTRA_ORIGINATING_URI, mOriginatingURI);
                }
                if (mReferrerURI != null) {
                    newIntent.putExtra(Intent.EXTRA_REFERRER, mReferrerURI);
                }
                if (mOriginatingUid != VerificationParams.NO_UID) {
                    newIntent.putExtra(Intent.EXTRA_ORIGINATING_UID, mOriginatingUid);
                }
                if (installerPackageName != null) {
                    newIntent.putExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME,
                            installerPackageName);
                }
                if (getIntent().getBooleanExtra(Intent.EXTRA_RETURN_RESULT, false)) {
                    newIntent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
                    newIntent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
                }
                if(localLOGV) Log.i(TAG, "downloaded app uri="+mPackageURI);
                startActivity(newIntent);
                finish();
            } else {
                mScrollView.pageScroll(View.FOCUS_DOWN);
            }
        } else if(v == mCancel) {
            // Cancel and finish
            setResult(RESULT_CANCELED);
            mInstallFlowAnalytics.setFlowFinished(
                    InstallFlowAnalytics.RESULT_CANCELLED_BY_USER);
            finish();
        }
    }

我们要做的是要把startInstallConfirm()方法显示的内容去掉，直接安装，现在修改应该很简单了吧。

在 initiateInstall()里把startInstallConfirm方法去掉，然后把onClick里的安装部分的代码直接复制到initiateInstall，是不是很简单暴力。

那么initiateInstall（）修改后的代码是：

    private void initiateInstall() {
        String pkgName = mPkgInfo.packageName;
        // Check if there is already a package on the device with this name
        // but it has been renamed to something else.
        String[] oldName = mPm.canonicalToCurrentPackageNames(new String[] { pkgName });
        if (oldName != null && oldName.length > 0 && oldName[0] != null) {
            pkgName = oldName[0];
            mPkgInfo.packageName = pkgName;
            mPkgInfo.applicationInfo.packageName = pkgName;
        }
        // Check if package is already installed. display confirmation dialog if replacing pkg
        try {
            // This is a little convoluted because we want to get all uninstalled
            // apps, but this may include apps with just data, and if it is just
            // data we still want to count it as "installed".
            mAppInfo = mPm.getApplicationInfo(pkgName,
                    PackageManager.GET_UNINSTALLED_PACKAGES);
            if ((mAppInfo.flags&ApplicationInfo.FLAG_INSTALLED) == 0) {
                mAppInfo = null;
            }
        } catch (NameNotFoundException e) {
            mAppInfo = null;
        }

        mInstallFlowAnalytics.setReplace(mAppInfo != null);
        mInstallFlowAnalytics.setSystemApp(
                (mAppInfo != null) && ((mAppInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0));

        //zhuk
        //startInstallConfirm();
                mInstallFlowAnalytics.setInstallButtonClicked();
                Intent newIntent = new Intent();
                newIntent.putExtra(PackageUtil.INTENT_ATTR_APPLICATION_INFO,
                        mPkgInfo.applicationInfo);
                newIntent.setData(mPackageURI);
                newIntent.setClass(this, InstallAppProgress.class);
                newIntent.putExtra(InstallAppProgress.EXTRA_MANIFEST_DIGEST, mPkgDigest);
                newIntent.putExtra(
                        InstallAppProgress.EXTRA_INSTALL_FLOW_ANALYTICS, mInstallFlowAnalytics);
                String installerPackageName = getIntent().getStringExtra(
                        Intent.EXTRA_INSTALLER_PACKAGE_NAME);
                if (mOriginatingURI != null) {
                    newIntent.putExtra(Intent.EXTRA_ORIGINATING_URI, mOriginatingURI);
                }
                if (mReferrerURI != null) {
                    newIntent.putExtra(Intent.EXTRA_REFERRER, mReferrerURI);
                }
                if (mOriginatingUid != VerificationParams.NO_UID) {
                    newIntent.putExtra(Intent.EXTRA_ORIGINATING_UID, mOriginatingUid);
                }
                if (installerPackageName != null) {
                    newIntent.putExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME,
                            installerPackageName);
                }
                if (getIntent().getBooleanExtra(Intent.EXTRA_RETURN_RESULT, false)) {
                    newIntent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
                    newIntent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
                }
                if(localLOGV) Log.i(TAG, "downloaded app uri="+mPackageURI);
                startActivity(newIntent);
                finish();
    }

大功告成！