'MainActivity()' 不能应用于“(android.content.Intent)”

Question

我该如何解决这个问题？

我的代码：

public class MainActivity extends AppCompatActivity {

    private ImageView iconImage;
    private LinearLayout linearLayout;
    private Button register;
    private Button login;



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

        iconImage = findViewById(R.id.icon_image);
        linearLayout = findViewById(R.id.linear_layout);
        register = findViewById(R.id.register);
        login = findViewById(R.id.login);

        linearLayout.animate().alpha(0f).setDuration(1);

        TranslateAnimation animation = new TranslateAnimation(0,0,0,-1000);
        animation.setDuration(1000);
        animation.setFillAfter(false);
        animation.setAnimationListener(new myAnimationListener());

         iconImage.setAnimation(animation);

         register.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
                 new MainActivity(new Intent(MainActivity.this, RegisterActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP));  **Here saying that is create constructor**
             }
         });

         login.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
                 new MainActivity(new Intent(MainActivity.this, LoginActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP));**Here saying that is create constructor**
             }
         });
    }
    private class myAnimationListener implements Animation.AnimationListener{
        @Override
        public void onAnimationStart(Animation animation) {
        }

        @Override
        public void onAnimationEnd(Animation animation) {
             iconImage.clearAnimation();
             iconImage.setVisibility(View.INVISIBLE);
             linearLayout.animate().alpha(1f).setDuration(1000);
        }

        @Override
        public void onAnimationRepeat(Animation animation) {

        }
    }
}

如果我在 MainActivity(new Intent(MainActivity.this, LoginActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP)); 之前没有使用 new 运算符，它会显示错误是预期的方法调用。如何解决此错误？

Answer 1

替换：

new MainActivity(new Intent(MainActivity.this, RegisterActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP));

与：

startActivity(new Intent(MainActivity.this, RegisterActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP));

（第二个 new MainActivity() 行也类似）

请注意，大多数关于 Android 应用程序开发的书籍和入门课程都介绍了 startActivity() 的使用。 FWIW，here is a free book of mine, and here is the chapter in that book talking about multiple activities and startActivity()。

'MainActivity()' 不能应用于“(android.content.Intent)”

'MainActivity()' cannot be applied to '(android.content.Intent)'

java

android

constructor

android-intent