Android静态对象生命周期

Android静态对象生命周期

public class MyStaticClass {
    private static int count;
    static {
        count = 0;
    }
    public static void incrementCount() {
        count++;
    }
    public static int getCount() {
        return count;
    }
}

public class MainActivity extends AppCompatActivity {
    private TextView countTextView;
    private Button incrementButton;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        countTextView = findViewById(R.id.countTextView);
        incrementButton = findViewById(R.id.incrementButton);
        incrementButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                MyStaticClass.incrementCount();
                countTextView.setText(String.valueOf(MyStaticClass.getCount()));
            }
        });
    }
}