本文实例为大家分享了Android实现加载对话框的具体代码,供大家参考,具体内容如下
这里简单说一下两种实现加载对话框的方式:1.使用动画让一个图片旋转 2.使用progressbar。
感觉简单来说,dialog就是一个弹出的window,把自己定义的布局放置到window里面就可以了,加载对话框就是有个加载的动画,核心的地方就是实现这个动画,所所以方法 可以有,对图片添加动画,或者使用progressbar。
第一种方式:使用动画让一个图片旋转
先看一下布局:
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "match_parent" android:layout_height = "match_parent" android:background = "@drawable/dialog_bg_while" android:orientation = "vertical" > < ImageView android:layout_width = "54dp" android:id = "@+id/loading_dialog_pic" android:layout_height = "54dp" android:layout_gravity = "center_horizontal" android:layout_marginTop = "15dp" android:background = "@drawable/loading" /> < TextView android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_gravity = "center_horizontal" android:layout_marginTop = "10dp" android:text = "正在加载..." /> </ LinearLayout > |
然后自定义Alertdialog,并对图片添加旋转动画:
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public class LoadingDialog extends AlertDialog { private final String DEFAULT_TEXT= "正在加载" ; private ImageView mImageview; private TextView mTextView; private LinearLayout mLayout; private String mText; protected LoadingDialog(Context context) { super (context); // TODO Auto-generated constructor stub } @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super .onCreate(savedInstanceState); mLayout=(LinearLayout) LinearLayout.inflate(getContext(), R.layout.loading_dialog, null ); mImageview=(ImageView) mLayout.findViewById(R.id.loading_dialog_pic); mTextView=(TextView) mLayout.findViewById(R.id.loading_dialog_text); loadanimation(); getWindow().setContentView(mLayout); } private void loadanimation() { //对图片添加旋转动画 // TODO Auto-generated method stub Animation anim=AnimationUtils.loadAnimation(getContext(), R.anim.loading_dialog_anim); LinearInterpolator lin = new LinearInterpolator(); anim.setInterpolator(lin); mImageview.setAnimation(anim); } } |
看一下xml的动画:
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<? xml version = "1.0" encoding = "utf-8" ?> < set xmlns:android = "http://schemas.android.com/apk/res/android" > < rotate android:duration = "1500" android:pivotX = "50%" android:pivotY = "50%" android:fromDegrees = "0.0" android:repeatCount = "infinite" android:toDegrees = "-358" /> </ set > |
第二种方式:使用progressbar
首先是一个animation-list:
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<? xml version = "1.0" encoding = "utf-8" ?> < animation-list xmlns:android = "http://schemas.android.com/apk/res/android" > < item android:drawable = "@drawable/loading1" android:duration = "100" /> < item android:drawable = "@drawable/loading2" android:duration = "100" /> < item android:drawable = "@drawable/loading3" android:duration = "100" /> < item android:drawable = "@drawable/loading4" android:duration = "100" /> < item android:drawable = "@drawable/loading5" android:duration = "100" /> < item android:drawable = "@drawable/loading6" android:duration = "100" /> < item android:drawable = "@drawable/loading7" android:duration = "100" /> < item android:drawable = "@drawable/loading8" android:duration = "100" /> </ animation-list > |
看一下布局的实现:
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:background = "@drawable/dialog_bg_while" android:orientation = "vertical" > < ProgressBar style = "@android:style/Widget.ProgressBar.Large" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_gravity = "center_horizontal" android:layout_marginTop = "10dp" android:indeterminateDrawable = "@drawable/loading_animation_list" android:indeterminateDuration = "1500" /> < View android:layout_width = "match_parent" android:layout_height = "1dp" android:background = "#00BCD4" /> < TextView android:id = "@+id/loading_dialog_text" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_gravity = "center_horizontal" android:layout_marginTop = "10dp" android:text = "正在加载..." /> </ LinearLayout > |
然后自定义一个alertdialog:
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public class LoadingDialog extends AlertDialog { private final String DEFAULT_TEXT= "正在加载" ; private TextView mTextView; private LinearLayout mLayout; private String mText; protected LoadingDialog(Context context) { super (context); // TODO Auto-generated constructor stub } @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super .onCreate(savedInstanceState); mLayout=(LinearLayout) LinearLayout.inflate(getContext(), R.layout.loading_dialog, null ); mTextView=(TextView) mLayout.findViewById(R.id.loading_dialog_text); WindowManager m=(WindowManager) getContext().getSystemService(getContext().WINDOW_SERVICE); int windowwith=m.getDefaultDisplay().getWidth(); int w=windowwith* 3 / 5 ; int h= 300 ; getWindow().setLayout(w, h); //设置对话框窗体大小 getWindow().setContentView(mLayout); } } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/u014614038/article/details/47809393