java - TabItem:ClickListener不起作用(Android/Java)

好吧，我想处理的某些“ TabItems”的“ ClickListeners”无法正常工作。

TabItem TabItem1;

        View.OnClickListener Klick = new View.OnClickListener() {
        public void onClick(View v) {
            switch(v.getId()) {
                case R.id.guiTabItem1:
                    Toast.makeText(MainActivity.this,"Lol wtf asdsadfdfs", Toast.LENGTH_LONG);
                    break;
                case R.id.guiTabItem2:
                    // test
                    break;
            }
        }
    };

应用程序已加载，但按选项卡上的按钮无效。我还尝试使用“ setOnClickListener”将click事件分配给选项卡。这会导致崩溃。

tabItem1.setOnClickListener(Klick);

并且以下尝试也无效：

tabItem1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this,"Lol", Toast.LENGTH_LONG);
            }
        });

这是完整的代码片段。提前致谢！

public class MainActivity extends Activity {

    ListView Liste;
    MediaPlayer Player;
    TabLayout guiTopNav;

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

TabItem TabItem1 = findViewById(R.id.guiTabItem1);

View.OnClickListener Klick = new View.OnClickListener() {
    public void onClick(View v) {
        switch(v.getId()) {
            case R.id.guiTabItem1:
                Toast.makeText(MainActivity.this,"Lol wtf asdsadfdfs", Toast.LENGTH_LONG);
                break;
            case R.id.guiTabItem2:
                // it was the second button
                break;
        }
    }
};

tabAndreas.setOnClickListener(Klick);

}

最佳答案

因此，我制定了解决方案。显然，setOnClickListener（）与TabItems或TabLayouts不兼容。而是，使用以下解决方案为选项卡创建单击功能。当然，必须在设计器中将三个TabItem归类为一个TabLayout。

    // #################################################################### GUI

    TabLayout guiTabs;
    guiTabs = findViewById(R.id.guiTopNav);
    guiTabs.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
                switch(tab.getPosition()) {
                    case 0: Toast.makeText(MainActivity.this, "Tab 1", Toast.LENGTH_LONG).show();
                    break;
                    case 1: Toast.makeText(MainActivity.this, "Tab 2", Toast.LENGTH_LONG).show();
                    break;
                    case 2: Toast.makeText(MainActivity.this, "Tab 3", Toast.LENGTH_LONG).show();
                    break;
                }
            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });