Question

我正在尝试将动画添加到我的线性布局中。以下是我的代码： -

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:id="@+id/mylinearlayout"
        android:weightSum="1">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/imageView1"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:scaleType="centerCrop"
        android:layout_weight="0.5"
        android:src="@mipmap/ic_launcher"/>

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@android:color/darker_gray"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <TextView
                android:id="@+id/textView1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@+id/offerImage"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="50dp"
                android:layout_weight="0.5"
                android:layout_gravity="center_horizontal"
                android:text="Large Text"
                android:textAppearance="?android:attr/textAppearanceLarge" />

            <Button
                android:id="@+id/startAnimation"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@+id/offerImage"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="50dp"
                android:layout_weight="0.5"
                android:layout_gravity="center_horizontal"
                android:text="Start"
                 />

        </LinearLayout>

    </LinearLayout>

在我的活动的onCreate方法中，我喜欢

@Override
protected void onCreate(Bundle savedInstanceState) {
    .
    .
    .

    LinearLayout ll_mainLayout = (LinearLayout)findViewById(R.id.mylinearlayout);
    TextView tv_data = (TextView) findViewById(R.id.textView1);
    Button btn_startAnimation = (Button)findViewById(R.id.startAnimation);

    tv_data.setText("Before Animation");

    btn_StartAnimation.setOnClickListner(new View.OnClickListener(){

        @Override
        public void OnClick(View v)
        {
                Animation animation = AnimationUtils.loadAnimation(getApplicationContext(),R.anim.move);
                ll_mainLayout.setAnimation(animation);

                ll_mainLayout.setLayoutAnimationListener(new Animation.AnimationListener() {
                @Override
                public void onAnimationStart(Animation animation) {

                }

                @Override
                public void onAnimationEnd(Animation animation) {
                    showData();
                }

                @Override
                public void onAnimationRepeat(Animation animation) {

                }
            });


        }

    });




}

public void showData()
{
    tv_data.setText("After Animation");
}
}

我可以看到动画发生但动画结束后tv_data textview不会改为“After Animation”;

请帮忙

Answer 1

在Animation对象上设置AnimationListener：

animation.setAnimationListener(new Animation.AnimationListener() {
    @Override
    public void onAnimationEnd (Animation animation) {
        showData();
    }

    @Override
    public void onAnimationRepeat (Animation animation) {}

    @Override
    public void onAnimationStart (Animation animation) {}
});

另外，如果您希望立即开始，请startAnimation()使用setAnimation()代替ll_mainLayout。

动画结束Android后更新TextView

1 个答案: