Android Studio:无法解析符号“原始" [英] Android Studio: Cannot resolve symbol 'raw'

问题描述

我在res"文件夹中有一个名为raw"的资源目录，但仍然无法通过我的代码访问它.尝试声明 MediaPlayer 变量时出现问题.

I've a resource directory called "raw" in the "res" folder, but still can't access it through my code. The problem occurs when trying to declare the MediaPlayer variable.

public class MainActivity extends AppCompatActivity {

    private MediaPlayer pSong;

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

        pSong = MediaPlayer.create(this,R.raw.rando);


        Button playButton = (Button) findViewById(R.id.play);

        playButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(MainActivity.this,"Play", Toast.LENGTH_SHORT).show();
            }
        });

        }

}

推荐答案

Android Studio 3.6+:

点击Build ->Rebuild Project 然后点击File ->将项目与 Gradle 文件同步

Android Studio 3.6+:

Click on Build -> Rebuild Project and then click File -> Sync Project with Gradle Files

点击Build ->Rebuild Project 然后点击Tools ->Android ->将项目与 Gradle 文件同步

Click on Build -> Rebuild Project and then click Tools -> Android -> Sync Project with Gradle Files

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