android - 从右向左滑动 Android 动画

Question

嘿，我正在开发一个需要在 Android WebView 上使用幻灯片动画的 Android 项目。当用户从左向右滑动时，它移动到新页面，当它从右向左滑动时，它移动到上一页。但是Android只有两个过渡，即slide_out_right 和 slide_in_left。使用它们后，从左到右的滑动工作完美无缺，但另一个看起来很奇怪(相反)。

任何解决方案。我希望 slide_out_left 动画更精确。

Answer 1

通读blog post以过渡动画为例，我已包含以下代码:

通话 Activity

package com.as400samplecode;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity implements OnClickListener{

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

  Button nextActivity = (Button) findViewById(R.id.nextActivity);
  nextActivity.setOnClickListener(this);

 }

 public void onClick(View v) {

  switch (v.getId()) {
  case R.id.nextActivity:
   Intent nextActivity = new Intent(this,NextActivity.class);
   startActivity(nextActivity);
   //push from bottom to top
   overridePendingTransition(R.anim.push_up_in, R.anim.push_up_out);
   //slide from right to left
   //overridePendingTransition(R.anim.slide_in_right, R.anim.slide_out_left);
   break;

   // More buttons go here (if any) ...

  }
 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  // Inflate the menu; this adds items to the action bar if it is present.
  getMenuInflater().inflate(R.menu.activity_main, menu);
  return true;
 }

}

调用 Activity 的布局资源

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
 android:layout_height="match_parent" tools:context=".MainActivity"
 android:background="@color/ivory"> 
 <Button android:id="@+id/nextActivity" android:layout_width="match_parent"
  android:layout_height="wrap_content" android:layout_alignParentLeft="true"
  android:layout_alignParentTop="true" android:layout_marginTop="15dp"
  android:text="Go to Next Activity" /> 
</RelativeLayout>

调用的 Activity

package com.as400samplecode;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class NextActivity extends Activity implements OnClickListener{

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

        Button previousActivity = (Button) findViewById(R.id.previousActivity);
        previousActivity.setOnClickListener(this);

    }

 public void onClick(View v) {

  switch (v.getId()) {
  case R.id.previousActivity:
   finish();
   //push from top to bottom
   overridePendingTransition(R.anim.push_down_in, R.anim.push_down_out);
   //slide from left to right
   //overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_right);
   break;

   // More buttons go here (if any) ...

  }
 }


}

被调用 Activity 的布局资源

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
 android:layout_height="match_parent" tools:context=".NextActivity"
 android:background="@color/khaki">

 <Button android:id="@+id/previousActivity" android:layout_width="match_parent"
  android:layout_height="wrap_content" android:layout_alignParentLeft="true"
  android:layout_alignParentTop="true" android:layout_marginTop="15dp"
  android:text="Go to Previous Activity" />

</RelativeLayout>

动画资源 - push_down_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
 <translate android:fromYDelta="-100%p" android:toYDelta="0" android:duration="5000"/>
 <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="5000" />
</set>

动画资源 - push_down_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
 <translate android:fromYDelta="0" android:toYDelta="100%p" android:duration="5000" />
 <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="5000" />
</set>

动画资源 - push_up_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
 <translate android:fromYDelta="100%p" android:toYDelta="0" android:duration="5000"/>
 <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="5000" />
</set>

动画资源 - push_up_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
 <translate android:fromYDelta="0" android:toYDelta="-100%p" android:duration="5000"/>
 <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="5000" />
</set>

动画资源 - slide_in_left.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false" >
    <translate android:duration="5000" android:fromXDelta="-100%" android:toXDelta="0%"/>
    <alpha android:duration="5000" android:fromAlpha="0.0" android:toAlpha="1.0" />
</set>

动画资源 - slide_in_right.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false" >
    <translate android:duration="5000" android:fromXDelta="100%" android:toXDelta="0%" />
    <alpha android:duration="5000" android:fromAlpha="0.0" android:toAlpha="1.0" />
</set>

动画资源 - slide_out_left.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false" >
    <translate android:duration="5000" android:fromXDelta="0%" android:toXDelta="-100%"/>
    <alpha android:duration="5000" android:fromAlpha="1.0" android:toAlpha="0.0" />
</set>

动画资源 - slide_out_right.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false" >
    <translate android:duration="5000" android:fromXDelta="0%" android:toXDelta="100%"/>
    <alpha android:duration="5000" android:fromAlpha="1.0" android:toAlpha="0.0" />
</set>