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嗨，我正在开发一个应用程序使用图像，我的要求是每当我点击按钮图像必须移动底部到顶部，每当我点击停止按钮图像必须停止position.but我我只得到无论是图像移动底部或顶部移动图像从下到上在android
我的代码是
activity_main.xml中：
<?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"
android:orientation="vertical" >
<LinearLayout android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/startButton"
android:text="START"/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/stopButton"
android:text="STOP"
android:layout_marginLeft="150dip"/>
</LinearLayout>
<RelativeLayout
android:id="@+id/rl_footer"
android:layout_width="50dp"
android:layout_height="50dp"
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>
</RelativeLayout>
MainActivity.java：
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);
btn1 = (Button)findViewById(R.id.startButton);
btn1.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;
iv_header.setImageResource(R.drawable.download);
}else {
iv_header.setImageResource(R.drawable.download);
iv_header.setPadding(0, 0, 0, 10);
rl_footer.setBackgroundResource(R.drawable.download);
SlideToDown();
isBottom = true;
}
}
});
}
public void SlideToAbove() {
final Animation slide ;
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, 0.0f);
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() {
final Animation slide ;
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(500);
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;
}
}
你删除仍然不工作 – Durga
你还添加了代码来设置图像的位置？看到我的回答 –
什么代码我必须添加 – Durga