尝试获取活动上下文时出错

由于某种原因,我无法了解我活动的背景。 注释-

package com.example.myapp

public class TestActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test);
        Context context = this; // Error here
    }
}

错误是:

Incompatible types.
Required: android.content.Context
Found: com.example.myapp.TestActivity

我试图解决这个问题:

1. this 而不是 MainActivity.this
2. getApplicationContext() -无法解决方法错误
3. getActivity().getApplicationContext() -与#2相同的错误
5. 重新启动Android Studio
6. Android Studio版本2.3.3&3.0-同一问题

我是Android开发新手,所以如果你有一个解决方案给我,请尽可能简单地表达出来。提前谢谢。这是我的代码-我在 onClick 它说的方法 MainActivity.this :

public class MainActivity extends AppCompatActivity {

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

        // Find the View that shows the Numbers category
        TextView numbers = (TextView) findViewById(R.id.numbers);

        // If View is present, set a click listener on that View
        if(numbers != null) {
            numbers.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent numbersIntent = new Intent(MainActivity.this, NumbersActivity.class);
                    startActivity(numbersIntent);
                }
            });
        }
    }
}