如何设置浮动操作按钮

Question

我正在尝试学习圆形浮动操作按钮，但在 Builder 中出现错误，这是我设置浮动操作按钮的代码。我已经取了编译时依赖。如何修复错误？

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);


    // in Activity Context
    ImageView icon = new ImageView(this);
    icon.setImageResource(R.drawable.button_sub_action);
    FloatingActionButton actionButton = new FloatingActionButton.Builder(this)
            .setContentView(icon)
            .build();
    ImageView icon1 = new ImageView(this);
    icon1.setImageResource(R.drawable.button_action_dark_selector);
    ImageView icon2 = new ImageView(this);
    icon2.setImageResource(R.drawable.button_action_dark_selector);
    ImageView icon3 = new ImageView(this);
    icon3.setImageResource(R.drawable.button_action_dark_selector);

    SubActionButton.Builder itemBuilder = new SubActionButton.Builder(this);

    SubActionButton button1 = itemBuilder.setContentView(icon1).build();
    SubActionButton button2 = itemBuilder.setContentView(icon2).build();
    SubActionButton button3 = itemBuilder.setContentView(icon3).build();

    FloatingActionMenu actionMenu = new FloatingActionMenu.Builder(this)
            .addSubActionView(button1)
            .addSubActionView(button2)
            .addSubActionView(button3)
            .attachTo(actionButton)
            .build();

}

Answer 1

      SubActionButton button1 = itemBuilder.setContentView(icon1).build();
      SubActionButton button2 = itemBuilder.setContentView(icon2).build();
      SubActionButton button3 = itemBuilder.setContentView(icon3).build();

在按钮之后添加此代码。

      button1.setOnClickListener(this);
      button2.setOnClickListener(this);
      button3.setOnClickListener(this)