为什么看不到android.support.v7文件？

Question

I'm trying to do the demo for the new Cast SDK (for using Chromecast), but I'm having trouble. I downloaded a demo for Android, and I'm getting errors in my project when trying to import anything from android.support.v7 library.

If I try to import from android.support.v4 or android.support.v13, things show up, but nothing shows up when I try to import from android.support.v7. It seems as if I don't have these files, but when I open the Android SDK Manager, it seems that I have most things installed (Android 3.0 API 11 and above).

Does anyone know why I might be missing this, or how to get it up and running?

Here are the files that I need to import for my demo:

import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.MediaRouteActionProvider;
import android.support.v7.media.MediaRouteSelector;
import android.support.v7.media.MediaRouter;
import android.support.v7.media.MediaRouter.RouteInfo;

Answer 1

If you wants to integrate actionbar below android sdk 3.x use given link reference: Android Demo: http://developer.android.com/tools/support-library/features.html

"uses-sdk android:minSdkVersion="7"

Support Library classes that provide support for android sdk 2.x and above.

public class MainActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    getSupportActionBar().setTitle("ActionBar Support Demo");
}

}

http://www.coderzheaven.com/tag/android-support-v7-appcompat-jar/

Answer 2

There are multiple v7 libraries: appcompat, mediarouter and gridlayout. Follow the steps here to import and set them up (use Android Libraries with Resources); you need to install appcompat first and then mediarouter and make sure the mediarouter library lists appcompat as part of its dependency.

Answer 3

If you have already downloaded libraries, it will be present in android-sdk at following location.

android-sdk\\extras\\android\\support\\v7\\mediarouter\\libs\\android-support-v7-mediarouter.jar

similarly include other jars as well from follwing folder.

android-sdk\\extras\\android\\support\\v7

add these jars in your android project inside libs folder.

Answer 4

I fixed the import of MediaRouter by adding this line into the dependencies inside the build.gradle file:

compile 'com.android.support:mediarouter-v7:21.0.3'

Android Studio imports that as a library so there won't be any troubles with the resources at all.

Answer 5

You need to download and install Android Support Repository using the SDK Manager in Android Studio. After that add the dependencies inside the build.gradle file as shown below

dependencies {    
'compile com.android.support:mediarouter-v7:25.0.0'
}