在解雇之前更改DialogFragment进入/退出转换

Question

我有一个DialogFragment,我在onActivityCreated方法中为进入/退出设置动画,如下所示

  @Override
    public void onActivityCreated(Bundle arg0) {
        super.onActivityCreated(arg0);
        getDialog().getWindow()
                .getAttributes().windowAnimations = R.style.DialogAnimation;
    }

我的DialogAnimation样式文件如下

<style name="DialogAnimation">
        <item name="android:windowEnterAnimation">@android:anim/fade_in</item>
        <item name="android:windowExitAnimation">@android:anim/fade_out</item>
    </style>

这对我有用......

现在我的问题是我希望有两个不同的退出动画,一个用于点击确定按钮,一个用于取消按钮.所以我做的是我尝试在解雇之前更改转换,但它没有工作..任何解决方案如何实现......这就是我的尝试.

  @Override
    public void onClick(View v) {
        getDialog().getWindow()
                .getAttributes().windowAnimations = R.style.DialogAnimation2;
        this.dismiss();
    }

Answer 1

您可以在DialogFragment中执行此操作,而无需更改

getDialog().getWindow()
            .getAttributes().windowAnimations

您应该在onStart和onClick上设置"装饰视图"的动画.

这是代码剪切:

首先创建对话框

@Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        return new AlertDialog.Builder(getActivity())
                .setTitle("Hello from animated dialog :)")
                .setNegativeButton("Cancel",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int whichButton) {
                                //we have to add button here and then override it's click in onStart
                            }
                        }
                )
                .setCancelable(false)
                .create();
    }

然后重写onStart方法

@Override
    public void onStart() {
        super.onStart();

        AlertDialog dialog = (AlertDialog)getDialog();

        final View decorView = getDialog()
                .getWindow()
                .getDecorView();

        ObjectAnimator scaleDown = ObjectAnimator.ofPropertyValuesHolder(decorView,
                PropertyValuesHolder.ofFloat("scaleX", 0.0f, 1.0f),
                PropertyValuesHolder.ofFloat("scaleY", 0.0f, 1.0f),
                PropertyValuesHolder.ofFloat("alpha", 0.0f, 1.0f));
        scaleDown.setDuration(2000);
        scaleDown.start();


        Button positiveButton = dialog.getButton(Dialog.BUTTON_NEGATIVE);
        positiveButton.setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View v)
            {
                final View decorView = getDialog()
                        .getWindow()
                        .getDecorView();

                ObjectAnimator scaleDown = ObjectAnimator.ofPropertyValuesHolder(decorView,
                        PropertyValuesHolder.ofFloat("scaleX", 1.0f, 0.0f),
                        PropertyValuesHolder.ofFloat("scaleY", 1.0f, 0.0f),
                        PropertyValuesHolder.ofFloat("alpha", 1.0f, 0.0f));
                scaleDown.addListener(new Animator.AnimatorListener() {
                    @Override
                    public void onAnimationEnd(Animator animation) {
                        dismiss();
                    }

                    @Override
                    public void onAnimationStart(Animator animation) {
                    }
                    @Override
                    public void onAnimationCancel(Animator animation) {
                    }
                    @Override
                    public void onAnimationRepeat(Animator animation) {
                    }
                });
                scaleDown.setDuration(2000);
                scaleDown.start();
            }
        });
    }

这是结果动画

如果您从我的代码中删除缩放属性,您将只获得alpha动画.完全按照你的意愿.

删除这个:

PropertyValuesHolder.ofFloat("scaleX", 1.0f, 0.0f),
PropertyValuesHolder.ofFloat("scaleY", 1.0f, 0.0f),

Answer 2

您可以为对话框片段设置向上和向下动画.在'res/anim'中添加两个文件:

//向上滑动动画

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="@android:integer/config_mediumAnimTime"
        android:fromYDelta="100%"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toYDelta="0" />

</set>

//滑动dowm动画

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="@android:integer/config_mediumAnimTime"
        android:fromYDelta="0%p"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toYDelta="100%p" />

</set>

//风格

<style name="DialogAnimation">
    <item name="android:windowEnterAnimation">@anim/slide_up</item>
    <item name="android:windowExitAnimation">@anim/slide_down</item>
</style>

//内部对话框片段

@Override
public void onActivityCreated(Bundle arg0) {
    super.onActivityCreated(arg0);
    getDialog().getWindow()
   .getAttributes().windowAnimations = R.style.DialogAnimation;
}

Answer 3

我认为最好的方法是在按钮单击时调用不同的动画。因此你会得到类似于下面的内容：

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

        Button OkButton = (Button) findViewById(R.id.btnOk);
        Button CancelButton = (Button) findViewById(R.id.btnCancel);

        OkButton.setOnClickListener(new OnClickListener() {

            @Override    
            public void onClick(View view) {
                    getDialog().getWindow().getAttributes().windowAnimations = R.style.DialogAnimation;    
            }
        });
        return true;

        CancelButton.setOnClickListener(new OnClickListener() {

            @Override    
            public void onClick(View view) {
                getDialog().getWindow().getAttributes().windowAnimations = R.style.DialogAnimation2;    
            }
        });
        return true;
    }

如果我是你，我也会使用正确的命名约定以供将来参考。例如，将 DialogAnimation 设置为 OkAnimation，将 DialogAnimation2 设置为 CancelAnimation。

回家这有帮助:)