Settings应用详情页面 & 安卓应用安装器 - com.google.android.packageinstaller

Settings应用详情页面

$ adb shell dumpsys activity | grep "mResumedActivity" --color=auto
    mResumedActivity: ActivityRecord{32c5bd u0 com.android.settings/.applications.InstalledAppDetails t28}

代码

主要的action：

@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)

public static final String ACTION_APPLICATION_DETAILS_SETTINGS = "android.settings.APPLICATION_DETAILS_SETTINGS";

                Intent intent =  new Intent();
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                if (Build.VERSION.SDK_INT >= 9) {
                    intent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
                    intent.setData(Uri.fromParts("package", "指定应用包名, null));
                } else if (Build.VERSION.SDK_INT <= 8) {
                    intent.setAction(Intent.ACTION_VIEW);
                    intent.setClassName("com.android.settings", "com.android.settings.InstalledAppDetails");
                    intent.putExtra("com.android.settings.ApplicationPkgName", "指定应用的包名");
                }
                startActivity(intent);

配置文件

普通应用安装逻辑

packageUtils.installApp = function (path) {
    if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {//sd 卡已挂载
        var targetFile = new java.io.File(path);
        if (targetFile.exists()) {
            var intent = new android.content.Intent(android.content.Intent.ACTION_VIEW);
            intent.addCategory(android.content.Intent.CATEGORY_DEFAULT);
            intent.addFlags(android.content.Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.addFlags(android.content.Intent.FLAG_GRANT_READ_URI_PERMISSION)
            intent.addFlags(android.content.Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
            intent.setDataAndType(getFileUri(context, targetFile), "application/vnd.android.package-archive");
            context.startActivity(intent);
        } else {
            console.log("文件不存在");
        }
    }
}

主要核心在 application/vnd.android.package-archive 这是打开.apk文件的标识

Intent.setData

这里设置有两种方式

    public @NonNull Intent setData(@Nullable Uri data) {
        mData = data;
        mType = null;
        return this;
    }

    public @NonNull Intent setDataAndType(@Nullable Uri data, @Nullable String type) {
        mData = data;
        mType = type;
        return this;
    }

至于data 和 Uri 可以 参考 android.net.Uri parse(String uriString) | android.content.parseUriInternal(String uri, @UriFlags int flags)

关于这个 mType 就是 android手机中经常看到用xx播放,用xxx浏览器,分享到xxx等.这种菜单

{".3gp", "video/3gpp"},  
{".apk", "application/vnd.android.package-archive"},  
{".asf", "video/x-ms-asf"},  
{".avi", "video/x-msvideo"},  
{".bin", "application/octet-stream"},  
{".bmp", "image/bmp"},  
{".c", "text/plain"},  
{".class", "application/octet-stream"},  
{".conf", "text/plain"},  
{".cpp", "text/plain"},  
{".doc", "application/msword"},  
{".exe", "application/octet-stream"},  
{".gif", "image/gif"},  
{".gtar", "application/x-gtar"},  
{".gz", "application/x-gzip"},  
{".h", "text/plain"},  
{".htm", "text/html"},  
{".html", "text/html"},  
{".jar", "application/java-archive"},  
{".java", "text/plain"},  
{".jpeg", "image/jpeg"},  
{".jpg", "image/jpeg"},  
{".js", "application/x-javascript"},  
{".log", "text/plain"},  
{".m3u", "audio/x-mpegurl"},  
{".m4a", "audio/mp4a-latm"},  
{".m4b", "audio/mp4a-latm"},  
{".m4p", "audio/mp4a-latm"},  
{".m4u", "video/vnd.mpegurl"},  
{".m4v", "video/x-m4v"},  
{".mov", "video/quicktime"},  
{".mp2", "audio/x-mpeg"},  
{".mp3", "audio/x-mpeg"},  
{".mp4", "video/mp4"},  
{".mpc", "application/vnd.mpohun.certificate"},  
{".mpe", "video/mpeg"},  
{".mpeg", "video/mpeg"},  
{".mpg", "video/mpeg"},  
{".mpg4", "video/mp4"},  
{".mpga", "audio/mpeg"},  
{".msg", "application/vnd.ms-outlook"},  
{".ogg", "audio/ogg"},  
{".pdf", "application/pdf"},  
{".png", "image/png"},  
{".pps", "application/vnd.ms-powerpoint"},  
{".ppt", "application/vnd.ms-powerpoint"},  
{".prop", "text/plain"},  
{".rar", "application/x-rar-compressed"},  
{".rc", "text/plain"},  
{".rmvb", "audio/x-pn-realaudio"},  
{".rtf", "application/rtf"},  
{".sh", "text/plain"},  
{".tar", "application/x-tar"},  
{".tgz", "application/x-compressed"},  
{".txt", "text/plain"},  
{".wav", "audio/x-wav"},  
{".wma", "audio/x-ms-wma"},  
{".wmv", "audio/x-ms-wmv"},  
{".wps", "application/vnd.ms-works"},  
{".xml", "text/xml"},  
{".xml", "text/plain"},  
{".z", "application/x-compress"},  
{".zip", "application/zip"},  
{"", "*/*"} 

可以看出打开.apk文件 application/vnd.android.package-archive 是这个这个值就是赋给 data android 标签的 mimeType属性

frameworks/base/packages/PackageInstaller/AndroidManifest.xml

可以看出这里注册的Activity 有data属性 

到了这里我们知道了当初 context.startActivity(intent) 的拉起来的就是 com.android.packageinstaller.InstallStart

frameworks/base/packages/PackageInstaller/src/com/android/packageinstaller/InstallStart.java

static final String SCHEME_PACKAGE = "package";

static final String SCHEME_CONTENT = "content";

        Intent nextActivity = new Intent(intent);
        nextActivity.setFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT| Intent.FLAG_GRANT_READ_URI_PERMISSION);

        // The the installation source as the nextActivity thinks this activity is the source, hence
        // set the originating UID and sourceInfo explicitly
        nextActivity.putExtra(PackageInstallerActivity.EXTRA_CALLING_PACKAGE, callingPackage);
        nextActivity.putExtra(PackageInstallerActivity.EXTRA_CALLING_ATTRIBUTION_TAG,callingAttributionTag);
        nextActivity.putExtra(PackageInstallerActivity.EXTRA_ORIGINAL_SOURCE_INFO, sourceInfo);
        nextActivity.putExtra(Intent.EXTRA_ORIGINATING_UID, originatingUid);

        if (isSessionInstall) {
            nextActivity.setClass(this, PackageInstallerActivity.class);
        } else {
            Uri packageUri = intent.getData();

            if (packageUri != null && packageUri.getScheme().equals(ContentResolver.SCHEME_CONTENT)) {
                // [IMPORTANT] This path is deprecated, but should still work. Only necessary
                // features should be added.

                // Copy file to prevent it from being changed underneath this process
                nextActivity.setClass(this, InstallStaging.class);
            } else if (packageUri != null && packageUri.getScheme().equals(PackageInstallerActivity.SCHEME_PACKAGE)) {
                nextActivity.setClass(this, PackageInstallerActivity.class);
            } else {
                Intent result = new Intent();
                result.putExtra(Intent.EXTRA_INSTALL_RESULT,PackageManager.INSTALL_FAILED_INVALID_URI);
                setResult(RESULT_FIRST_USER, result);

                nextActivity = null;
            }
        }

        if (nextActivity != null) {
            startActivity(nextActivity);
        }
        finish();

可以看出 packageUri.getScheme().equals(ContentResolver.SCHEME_CONTENT) 为 true；所以这里 startActivity(nextActivity); 打开的就是 PackageInstallerActivity