请问, UC浏览器地址栏中, 点击URL输入框后会自动变化放大, 放大完成之后就切换到输入URL界面. 点击取消也有同样的动画放大效果. 请问该动画效果如何实现. 本人采用了scale发现效果没那么好, 没UC那么流畅.
CSDN移动问答
请问, UC浏览器地址栏中, 点击URL输入框后会自动变化放大, 放大完成之后就切换到输入URL界面. 点击取消也有同样的动画放大效果. 请问该动画效果如何实现. 本人采用了scale发现效果没那么好, 没UC那么流畅.
CSDN移动问答
我从其他地方看到过一个扩大的代码,你可以参考一下。是用animations的
The layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="10"
android:id="@+id/slide_layout">
<TextView
android:layout_weight="7"
android:padding="10dip"
android:id="@+id/left"
android:layout_width="0dip"
android:layout_height="fill_parent"></TextView>
<TextView
android:layout_weight="3"
android:padding="10dip"
android:id="@+id/right"
android:layout_width="0dip"
android:layout_height="fill_parent"></TextView>
</LinearLayout>
The activity:
public class TestActivity extends Activity {
private static final int ANIMATION_DURATION = 1000;
private View mSlidingLayout;
private View mLeftView;
private View mRightView;
private boolean mAnimating = false;
private boolean mLeftExpand = true;
private float mLeftStartWeight;
private float mLayoutWeightSum;
private Handler mAnimationHandler = new Handler();
private long mAnimationTime;
private Runnable mAnimationStep = new Runnable() {
@Override
public void run() {
long currentTime = System.currentTimeMillis();
float animationStep = (currentTime - mAnimationTime) * 1f / ANIMATION_DURATION;
float weightOffset = animationStep * (mLayoutWeightSum - mLeftStartWeight);
LinearLayout.LayoutParams leftParams = (LinearLayout.LayoutParams)
mLeftView.getLayoutParams();
LinearLayout.LayoutParams rightParams = (LinearLayout.LayoutParams)
mRightView.getLayoutParams();
leftParams.weight += mLeftExpand ? weightOffset : -weightOffset;
rightParams.weight += mLeftExpand ? -weightOffset : weightOffset;
if (leftParams.weight >= mLayoutWeightSum) {
mAnimating = false;
leftParams.weight = mLayoutWeightSum;
rightParams.weight = 0;
} else if (leftParams.weight <= mLeftStartWeight) {
mAnimating = false;
leftParams.weight = mLeftStartWeight;
rightParams.weight = mLayoutWeightSum - mLeftStartWeight;
}
mSlidingLayout.requestLayout();
mAnimationTime = currentTime;
if (mAnimating) {
mAnimationHandler.postDelayed(mAnimationStep, 30);
}
}
};
private void toggleExpand(boolean expand) {
mLeftExpand = expand;
if (!mAnimating) {
mAnimating = true;
mAnimationTime = System.currentTimeMillis();
mAnimationHandler.postDelayed(mAnimationStep, 30);
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.slide_test);
mLeftView = findViewById(R.id.left);
mRightView = findViewById(R.id.right);
mSlidingLayout = findViewById(R.id.slide_layout);
mLeftStartWeight = ((LinearLayout.LayoutParams)
mLeftView.getLayoutParams()).weight;
mLayoutWeightSum = ((LinearLayout) mSlidingLayout).getWeightSum();
}
}