Android 进度条使用详解及示例代码

<ProgressBarandroid:id=”@+id/pb_progressbar”style=”@style/StyleProgressBarMini”android:layout_width=”fill_parent”android:layout_height=”wrap_content”android:layout_margin=”30dp”android:background=”@drawable/shape_progressbar_bg”android:max=”100″android:progress=”50″ />

<style name=”StyleProgressBarMini” parent=”@android:style/Widget.ProgressBar.Horizontal”><item name=”android:maxHeight”>50dip</item><item name=”android:minHeight”>10dip</item><item name=”android:indeterminateOnly”>false</item><item name=”android:indeterminateDrawable”>@android:drawable/progress_indeterminate_horizontal</item><item name=”android:progressDrawable”>@drawable/shape_progressbar_mini</item></style>

<?xml version=”1.0″ encoding=”utf-8″?><layer-list xmlns:android=”http://schemas.android.com/apk/res/android” ><! 背景 ><item android:id=”@android:id/background”><shape><corners android:radius=”5dip” /><gradientandroid:angle=”270″android:centerY=”0.75″android:endColor=”#FFFFFF”android:startColor=”#FFFFFF” /></shape></item><item android:id=”@android:id/secondaryProgress”><clip><shape><corners android:radius=”0dip” /><gradientandroid:angle=”270″android:centerY=”0.75″android:endColor=”#df0024″android:startColor=”#df0024″ /></shape></clip></item><item android:id=”@android:id/progress”><clip><shape><corners android:radius=”5dip” /><gradientandroid:angle=”270″android:centerY=”0.75″android:endColor=”#de42ec”android:startColor=”#de42ec” /></shape></clip></item></layer-list>

<?xml version=”1.0″ encoding=”UTF-8″?><shape xmlns:android=”http://schemas.android.com/apk/res/android”android:shape=”rectangle” ><! 边框填充的颜色 ><solid android:color=”#cecece” /><! 设置进度条的四个角为弧形 ><! android:radius 弧形的半径 ><corners android:radius=”90dp” /><!padding：边界的间隔><paddingandroid:bottom=”1dp”android:left=”1dp”android:right=”1dp”android:top=”1dp” /></shape>

public class LoadingDialog {private Context context;private PopupWindow popupDialog;private LayoutInflater layoutInflater;private RelativeLayout layout;private RelativeLayout layout_bg;private View circleView;private RotateAnimation rotateAnim;private AlphaAnimation alphaAnim_in;private AlphaAnimation alphaAnim_out;public LoadingDialog(Context context) {layoutInflater = LayoutInflater.from(context);this.context = context;}private void initAnim() {rotateAnim = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);rotateAnim.setDuration(2000);rotateAnim.setRepeatMode(Animation.RESTART);rotateAnim.setRepeatCount(-1);rotateAnim.setInterpolator(new LinearInterpolator());alphaAnim_in = new AlphaAnimation(0f, 1f);alphaAnim_in.setFillAfter(true);alphaAnim_in.setDuration(200);alphaAnim_in.setInterpolator(new LinearInterpolator());alphaAnim_out = new AlphaAnimation(1f, 0f);alphaAnim_out.setFillAfter(true);alphaAnim_out.setDuration(100);alphaAnim_out.setInterpolator(new LinearInterpolator());alphaAnim_out.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation arg0) {}@Overridepublic void onAnimationRepeat(Animation arg0) {}@Overridepublic void onAnimationEnd(Animation arg0) {dismiss();}});}/*** 判断是否显示* @return*/public boolean isShowing() {if (popupDialog != null && popupDialog.isShowing()) {return true;}return false;}/*** 显示*/public void show() {dismiss();initAnim();layout = (RelativeLayout) layoutInflater.inflate(R.layout.view_loadingdialog, null);circleView = (View) layout.findViewById(R.id.loading_dialog);layout_bg = (RelativeLayout) layout.findViewById(R.id.bgLayout);popupDialog = new PopupWindow(layout, LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);View parentView = ((Activity) context).getWindow().findViewById(Window.ID_ANDROID_CONTENT);popupDialog.showAtLocation(parentView, Gravity.CENTER, 0, 0);layout_bg.startAnimation(alphaAnim_in);circleView.startAnimation(rotateAnim);}/*** 隐藏*/public void dismiss() {if (popupDialog != null && popupDialog.isShowing()) {layout_bg.clearAnimation();circleView.clearAnimation();popupDialog.dismiss();}}}

<?xml version=”1.0″ encoding=”utf-8″?><RelativeLayout xmlns:android=”http://schemas.android.com/apk/res/android”android:layout_width=”match_parent”android:layout_height=”match_parent” ><RelativeLayoutandroid:id=”@+id/bgLayout”android:layout_width=”match_parent”android:layout_height=”match_parent”android:background=”#66000000″ ><Viewandroid:id=”@+id/loading_dialog”android:layout_width=”48dp”android:layout_height=”48dp”android:layout_centerInParent=”true”android:background=”@drawable/shape_loading_dialog” /></RelativeLayout></RelativeLayout>

<?xml version=”1.0″ encoding=”utf-8″?><shape xmlns:android=”http://schemas.android.com/apk/res/android”android:shape=”oval” ><strokeandroid:width=”3dp”android:dashWidth=”2dp”android:dashGap=”3dp”android:color=”#fff”/><gradientandroid:startColor=”#00ffffff”android:endColor=”#00ffffff”android:angle=”180″/></shape>

public class LoadingImgDialog {private Context context;private PopupWindow popupDialog;private LayoutInflater layoutInflater;private RelativeLayout layout;private RelativeLayout layout_bg;private int residBg;private View loading_dialog;/** 背景添加旋转动画效果，实现了转动动作  **/private RotateAnimation rotateAnim;/** 透明度动画效果 **/private AlphaAnimation alphaAnim_in;private AlphaAnimation alphaAnim_out;public LoadingImgDialog(Context context, int residBg) {layoutInflater = LayoutInflater.from(context);this.residBg = residBg;this.context = context;}private void initAnim() {rotateAnim = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);rotateAnim.setDuration(2000);rotateAnim.setRepeatMode(Animation.RESTART);rotateAnim.setRepeatCount(-1);rotateAnim.setInterpolator(new LinearInterpolator());alphaAnim_in = new AlphaAnimation(0f, 1f);alphaAnim_in.setFillAfter(true);alphaAnim_in.setDuration(200);alphaAnim_in.setInterpolator(new LinearInterpolator());alphaAnim_out = new AlphaAnimation(1f, 0f);alphaAnim_out.setFillAfter(true);alphaAnim_out.setDuration(100);alphaAnim_out.setInterpolator(new LinearInterpolator());/** 监听动作，动画结束时，隐藏LoadingColorDialog **/alphaAnim_out.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation arg0) {}@Overridepublic void onAnimationRepeat(Animation arg0) {}@Overridepublic void onAnimationEnd(Animation arg0) {dismiss();}});}/*** 判断是否显示* @return*/public boolean isShowing() {if (popupDialog != null && popupDialog.isShowing()) {return true;}return false;}/*** 显示*/public void show() {dismiss();initAnim();layout = (RelativeLayout) layoutInflater.inflate(R.layout.view_loadingcolordialog, null);loading_dialog = (View) layout.findViewById(R.id.loading_dialog);loading_dialog.setBackgroundResource(residBg);layout_bg = (RelativeLayout) layout.findViewById(R.id.bgLayout);popupDialog = new PopupWindow(layout, LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);View parentView = ((Activity) context).getWindow().findViewById(Window.ID_ANDROID_CONTENT);popupDialog.showAtLocation(parentView, Gravity.CENTER, 0, 0);layout_bg.startAnimation(alphaAnim_in);loading_dialog.startAnimation(rotateAnim);}/*** 隐藏*/public void dismiss() {if (popupDialog != null && popupDialog.isShowing()) {layout_bg.clearAnimation();loading_dialog.clearAnimation();popupDialog.dismiss();}}}

public class MainActivity extends Activity implements OnClickListener {Button bt_loading_dialog;Button bt_color_loading_dialog;Button bt_color_loading_dialog2;LoadingDialog loadingDialog;LoadingImgDialog loadingColorDialog;LoadingImgDialog loadingColorDialog2;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}private void initView() {bt_loading_dialog = (Button) findViewById(R.id.bt_loading_dialog);bt_loading_dialog.setOnClickListener(this);bt_color_loading_dialog = (Button) findViewById(R.id.bt_loading_img_dialog);bt_color_loading_dialog.setOnClickListener(this);bt_color_loading_dialog2 = (Button) findViewById(R.id.bt_loading_img_dialog2);bt_color_loading_dialog2.setOnClickListener(this);loadingDialog = new LoadingDialog(this);loadingColorDialog = new LoadingImgDialog(this, R.drawable.img_loading);loadingColorDialog2 = new LoadingImgDialog(this, R.drawable.img_loading2);}@Overridepublic void onClick(View view) {switch (view.getId()) {case R.id.bt_loading_dialog:loadingDialog.show();break;case R.id.bt_loading_img_dialog:loadingColorDialog.show();break;case R.id.bt_loading_img_dialog2:loadingColorDialog2.show();break;default:break;}}@Overrideprotected void onDestroy() {super.onDestroy();loadingColorDialog.dismiss();}@Overridepublic void onBackPressed() {if (loadingDialog.isShowing()) {loadingDialog.dismiss();} else if (loadingColorDialog.isShowing()){loadingColorDialog.dismiss();} else if (loadingColorDialog2.isShowing()){loadingColorDialog2.dismiss();} else {finish();}}}