我有一个图像和一个按钮，当我点击按钮时，图像从上到下连续移动到底部到顶部，直到我点击停止按钮，但是当我点击开始按钮时，它只会从下到上或从上到下移动，它不是连续双方都在移动。
我的代码是：
public class MainActivity extends Activity {
RelativeLayout rl_footer;
ImageView iv_header;
boolean isBottom = true;
Button btn1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rl_footer = (RelativeLayout) findViewById(R.id.rl_footer);
iv_header = (ImageView) findViewById(R.id.iv_up_arrow);
Button button=(Button)findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
iv_header.setImageResource(R.drawable.download);
iv_header.setPadding(0, 10, 0, 0);
//rl_footer.setBackgroundResource(R.drawable.download);
if (isBottom) {
SlideToAbove();
isBottom = false;
} else {
iv_header.setImageResource(R.drawable.download);
iv_header.setPadding(0, 0, 0,50);
//rl_footer.setBackgroundResource(R.drawable.download);
SlideToDown();
isBottom = true;
}
}
});
}
public void SlideToAbove() {
Animation slide = null;
slide = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f,
Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
0.0f, Animation.RELATIVE_TO_SELF, -5.0f);
slide.setDuration(400);
slide.setFillAfter(true);
slide.setFillEnabled(true);
rl_footer.startAnimation(slide);
slide.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationRepeat(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
rl_footer.clearAnimation();
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
rl_footer.getWidth(), rl_footer.getHeight());
// lp.setMargins(0, 0, 0, 0);
lp.addRule(RelativeLayout.ALIGN_PARENT_TOP);
rl_footer.setLayoutParams(lp);
}
});
}
public void SlideToDown() {
Animation slide = null;
slide = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f,
Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
0.0f, Animation.RELATIVE_TO_SELF, 5.2f);
slide.setDuration(400);
slide.setFillAfter(true);
slide.setFillEnabled(true);
rl_footer.startAnimation(slide);
slide.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationRepeat(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
rl_footer.clearAnimation();
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
rl_footer.getWidth(), rl_footer.getHeight());
lp.setMargins(0, rl_footer.getWidth(), 0, 0);
lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
rl_footer.setLayoutParams(lp);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
xml代码：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rl_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/graphics" >
<RelativeLayout
android:id="@+id/rl_footer"
android:layout_width="fill_parent"
android:layout_height="70dp"
android:layout_alignParentBottom="true">
<ImageView
android:id="@+id/iv_up_arrow"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:paddingBottom="10dp"
android:src="@drawable/download" />
</RelativeLayout>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/rl_footer"
android:layout_alignParentTop="true"
android:text="start" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/rl_footer"
android:layout_alignParentTop="true"
android:text="stop" />
</RelativeLayout>
答案 0 :(得分：4)
尝试下面的代码，它可以很好地适用于你的两个动画，它可以从下到上，从上到下连续移动图像。并且当您点击停止按钮时将停止动画。
我做了一些相关的更改，您可以使用您的代码进行验证。
public class MainActivity extends Activity {
RelativeLayout rl_footer;
ImageView iv_header;
boolean isBottom = true;
Button btn1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rl_footer = (RelativeLayout) findViewById(R.id.rl_footer);
iv_header = (ImageView) findViewById(R.id.iv_up_arrow);
Button button = (Button) findViewById(R.id.button1);
Button buttonstop = (Button) findViewById(R.id.button2);
buttonstop.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
rl_footer.clearAnimation();
rl_footer.removeAllViews();
}
});
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
iv_header.setImageResource(R.drawable.delete);
iv_header.setPadding(0, 10, 0, 0);
// rl_footer.setBackgroundResource(R.drawable.download);
// if (isBottom) {
SlideToAbove();
// isBottom = false;
// } else {
// iv_header.setImageResource(R.drawable.delete);
// iv_header.setPadding(0, 0, 0,50);
// rl_footer.setBackgroundResource(R.drawable.download);
// SlideToDown();
// isBottom = true;
// }
}
});
}
public void SlideToAbove() {
Animation slide = null;
slide = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f,
Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
0.0f, Animation.RELATIVE_TO_SELF, -5.0f);
slide.setDuration(400);
slide.setFillAfter(true);
slide.setFillEnabled(true);
rl_footer.startAnimation(slide);
slide.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationRepeat(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
// rl_footer.clearAnimation();
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
rl_footer.getWidth(), rl_footer.getHeight());
// lp.setMargins(0, 0, 0, 0);
lp.addRule(RelativeLayout.ALIGN_PARENT_TOP);
rl_footer.setLayoutParams(lp);
iv_header.setImageResource(R.drawable.delete);
iv_header.setPadding(0, 0, 0, 50);
SlideToDown();
}
});
}
public void SlideToDown() {
Animation slide = null;
slide = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f,
Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
0.0f, Animation.RELATIVE_TO_SELF, 5.2f);
slide.setDuration(400);
slide.setFillAfter(true);
slide.setFillEnabled(true);
rl_footer.startAnimation(slide);
slide.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationRepeat(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
// rl_footer.clearAnimation();
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
rl_footer.getWidth(), rl_footer.getHeight());
lp.setMargins(0, rl_footer.getWidth(), 0, 0);
lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
rl_footer.setLayoutParams(lp);
iv_header.setImageResource(R.drawable.delete);
iv_header.setPadding(0, 10, 0, 0);
SlideToAbove();
}
});
}
}
<强>布局：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rl_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:id="@+id/rl_footer"
android:layout_width="fill_parent"
android:layout_height="70dp"
android:layout_alignParentBottom="true" >
<ImageView
android:id="@+id/iv_up_arrow"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:paddingBottom="10dp"
android:src="@drawable/ic_launcher" />
</RelativeLayout>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/rl_footer"
android:layout_alignParentTop="true"
android:text="start" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="84dp"
android:text="stop" />
</RelativeLayout>
答案 1 :(得分：2)
请使用第二个按钮删除属性android:layout_alignParentTop="true"，并将其放在您放在顶部的按钮下方。检查它是否能解决您的问题。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rl_main"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/rl_footer"
android:layout_alignParentTop="true"
android:text="start" />
<RelativeLayout
android:id="@+id/rl_footer"
android:layout_width="fill_parent"
android:layout_height="70dp"
android:layout_alignParentBottom="true" >
<ImageView
android:id="@+id/iv_up_arrow"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:paddingBottom="10dp"
android:src="your drawable" />
</RelativeLayout>
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/rl_footer"
android:layout_below="@id/button1" // Change here
android:text="stop" />