实现滑动界面及过渡动画的方法

------------------------MainActivity.java---------------------------------

package com.example.slider;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
  private SharedPreferences sp;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    sp = getSharedPreferences("config", MODE_PRIVATE);
    boolean isCOnfigured= sp.getBoolean("isConfigured", false);
    if (isConfigured) {
      setContentView(R.layout.activity_main);
    } else {
      Intent intent = new Intent(this, Setup1Activity.class);
      startActivity(intent);
      finish();
    }
  }
  public void reEnterSetup(View view) {
    Intent intent = new Intent(this, Setup1Activity.class);
    startActivity(intent);
    finish();
  }
}

--------------------------------BaseSetupActivity.java---------是下面3个activity 的父类------------------

package com.example.slider;
import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;
public abstract class BaseSetupActivity extends Activity {
  private GestureDetector gestureDetector;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    gestureDetector = new GestureDetector(this, new SimpleOnGestureListener() {
      @Override
      public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
        if (Math.abs(velocityX) <200) {
          Toast.makeText(getApplicationContext(), "滑动速度太慢", Toast.LENGTH_SHORT).show();
          return true;
        }
        if (Math.abs(e2.getRawY() - e1.getRawY()) > 100) {
          Toast.makeText(getApplicationContext(), "请水平滑动", Toast.LENGTH_SHORT).show();
          return true;
        }
        if ((e2.getRawX() - e1.getRawX()) > 200) {
          showPreviousPage();
          return true;
        }
        if ((e1.getRawX() - e2.getRawX()) > 200) {
          showNextPage();
          return true;
        }
      return super.onFling(e1, e2, velocityX, velocityY);
    });
  }
  public abstract void showNextPage();
  public abstract void showPreviousPage();
  public void onNextClick(View view) {
    showNextPage();
  }
  public void onPreviousClick(View view) {
    showPreviousPage();
  }
  @Override
  public boolean onTouchEvent(MotionEvent event) {
    gestureDetector.onTouchEvent(event);
    return super.onTouchEvent(event);
  }
}

-------------------------------Setup1Activity.java------------------------

package com.example.slider;
import android.content.Intent;
import android.os.Bundle;
public class Setup1Activity extends BaseSetupActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_setup1);
  }
  @Override
  public void showNextPage() {
    Intent intent = new Intent(this, Setup2Activity.class);
    startActivity(intent);
    finish();
    overridePendingTransition(R.anim.slide_in_right, R.anim.slide_out_left);
  }
  @Override
  public void showPreviousPage() {
  }
}

------------------------Setup2Activity.java---------------------

package com.example.slider;
import android.content.Intent;
import android.os.Bundle;
public class Setup2Activity extends BaseSetupActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_setup2);
  }
  @Override
  public void showNextPage() {
    Intent intent = new Intent(this, Setup3Activity.class);
    startActivity(intent);
    finish();
    overridePendingTransition(R.anim.slide_in_right, R.anim.slide_out_left);
  }
  @Override
  public void showPreviousPage() {
    Intent intent = new Intent(this, Setup1Activity.class);
    startActivity(intent);
    finish();
    overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_right);
  }
}

---------------------Setup3Activity.java---------------------

package com.example.slider;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
public class Setup3Activity extends BaseSetupActivity {
  private SharedPreferences sp;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_setup3);
    sp = getSharedPreferences("config", MODE_PRIVATE);
  }
  @Override
  public void showNextPage() {
    Editor editor = sp.edit();
    editor.putBoolean("isConfigured", true);
    editor.apply();
    Intent intent = new Intent(this, MainActivity.class);
    startActivity(intent);
    finish();
    overridePendingTransition(R.anim.slide_in_right, R.anim.slide_out_left);
  }
  @Override
  public void showPreviousPage() {
    Intent intent = new Intent(this, Setup2Activity.class);
    startActivity(intent);
    finish();
    overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_right);
  }
}

。。。。。。。。main.xml。。。。。。。。。。。。。。。。

  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical">