技術標籤：Androidandroidandroid studio安卓

說是返回實際就是結束當前Activity

<ImageButton
                android:id="@+id/GoBack"
                android:layout_width="35dp"
                android:layout_height="35dp"
                android:layout_alignParentRight="true"
                android:src="@drawable/ic_baseline_keyboard_return_24"
                android:background="@color/green"
                android:onClick="GoBack"/>
 

public class RegisterActivity extends AppCompatActivity {
    protected  void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.register_layout);
    }
    public void GoBack(View view){
        finish();
    }
}