內部類bt1 內部匿名類bt2:
public class MainActivity extends AppCompatActivity {
Button bt1;
Button bt2;
Button bt3;
Button bt4;
TextView tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt1 = findViewById(R.id.button1);
tv = findViewById(R.id.textView);
bt1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
tv.setText("按鈕1觸發了");
}
});
bt2 = findViewById(R.id.button2);
bt2.setOnClickListener(new clicklistener());
}
class clicklistener implements View.OnClickListener{
public void onClick(View v)
{
tv.setText("按鈕2觸發了");
}
}
}