Question

我想创建一个可以通过蓝牙发送自己（apk文件）的应用程序。但我找到apk文件路径时遇到麻烦。我试过这段代码：

final PackageManager pm = this.getPackageManager();
    List<PackageInfo> packages =  pm.getInstalledPackages(PackageManager.GET_META_DATA);
    String st = null;
    for (PackageInfo packageInfo : packages) {
        if(packageInfo.packageName.contains("testbutton"))
        st=packageInfo.packageName;
    }

    Intent intent = new Intent();  
    intent.setAction(Intent.ACTION_SEND);  
    intent.setType("image/*");

    String uri = "/data/app/";
    uri+=st;
    intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(uri)));
    startActivity(intent);

但是st返回null值。请帮我解决一下这个。提前谢谢

Answer 1

无需迭代。获取应用程序本身APK文件uri就像这样简单：

String appUri = getApplicationInfo().publicSourceDir;

另请注意，doc说明了publicSourceDir：

sourceDir的公开部分的完整路径，包括资源和清单。这可能与之不同 sourceDir如果应用程序是前向锁定的。

另请注意，要发送APK文件，您需要将类型设置为application/vnd.android.package-archive而不是image/*

所以完整的代码片段是：

String appUri = getApplicationInfo().publicSourceDir;
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("application/vnd.android.package-archive");
sharingIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(appUri)));
startActivity(Intent.createChooser(sharingIntent, "Share via"));

Answer 2

最后我找到了正确的答案，感谢@Kanak的帮助：）

PackageManager pm = getPackageManager();
    String uri = null;
    for (ApplicationInfo app : pm.getInstalledApplications(0)) {
        if(!((app.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) == 1))
            if(!((app.flags & ApplicationInfo.FLAG_SYSTEM) == 1)){
                uri=app.sourceDir;
                  if(uri.contains("com.example.test"))
                  break;
            }
    }

    Intent intent = new Intent();  
    intent.setAction(Intent.ACTION_SEND);  
    intent.setType("image/*");
    intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(uri)));
    startActivity(intent);

Answer 3

List<ApplicationInfo> PackageManager.getInstalledApplications() // will give you a list of the installed applications, and 
ApplicationInfo.sourceDir  //is the path to the .apk file.

PackageManager pm = getPackageManager();

for (ApplicationInfo app : pm.getInstalledApplications(0)) {
  Log.d("PackageList", "package: " + app.packageName + ", sourceDir: " + app.sourceDir);
}

输出如下内容：

package: com.tmobile.themechooser, sourceDir: /system/app/ThemeChooser.apk
package: com.tmobile.thememanager, sourceDir: /system/app/ThemeManager.apk
package: com.touchtype.swiftkey, sourceDir: /data/app/com.touchtype.swiftkey-1.apk
package: com.twitter.android, sourceDir: /data/app/com.twitter.android-2.apk
package: fm.last.android, sourceDir: /data/app/fm.last.android-1.apk

所以，这样你就可以找到所有应用程序apk的路径。

如何找到apk文件的android应用程序存储路径

3 个答案: