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在我的程序中，基本是： -Android程序处理一个又一个的任务
当程序打开时它会显示一个动画，然后它会显示饼图结果。
我的代码是：---
public class Popup_animation11 extends Activity {
private static int[] COLORS = new int[] { Color.MAGENTA, Color.CYAN };
LinearLayout layout;
private CategorySeries mSeries = new CategorySeries("");
private DefaultRenderer mRenderer = new DefaultRenderer();
private GraphicalView mChartView;
Context ctx;
private TransparentProgressDialog pd;
private Handler h;
private Runnable r;
EditText name1,name2;
private int[] VALUES = { 40,60 };
String x1,y1;
Button btnOpenPopup;
String[] NAME_LIST ;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.popup_main);
Button btnOpenPopup = (Button)findViewById(R.id.openpopup);
btnOpenPopup.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View arg0) {
pd.show();
}
});
h = new Handler();
pd = new TransparentProgressDialog(this, R.drawable.uktrafficlights);
r =new Runnable() {
@Override
public void run() {
if (pd.isShowing()) {
pd.dismiss();
}
}
};
}
@Override
protected void onDestroy() {
h.removeCallbacks(r);
if (pd.isShowing()) {
pd.dismiss();
}
super.onDestroy();
}
private class TransparentProgressDialog extends Dialog {
private ImageView iv;
public TransparentProgressDialog(Context context, int resourceIdOfImage) {
super(context, R.style.TransparentProgressDialog);
WindowManager.LayoutParams wlmp = getWindow().getAttributes();
wlmp.gravity = Gravity.CENTER_HORIZONTAL;
getWindow().setAttributes(wlmp);
setTitle(null);
setCancelable(false);
setOnCancelListener(null);
LinearLayout layout = new LinearLayout(context);
layout.setOrientation(LinearLayout.VERTICAL);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
iv = new ImageView(context);
iv.setImageResource(resourceIdOfImage);
layout.addView(iv, params);
addContentView(layout, params);
}
@Override
public void show() {
super.show();
RotateAnimation anim = new RotateAnimation(0.0f, 360.0f , Animation.RELATIVE_TO_SELF, .5f, Animation.RELATIVE_TO_SELF, .5f);
anim.setInterpolator(new LinearInterpolator());
anim.setRepeatCount(Animation.INFINITE);
anim.setDuration(3000);
iv.setAnimation(anim);
iv.startAnimation(anim);
anim.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
//here display data
h.postDelayed(r, 100);
pd.dismiss();
mRenderer.setApplyBackgroundColor(true);
mRenderer.setBackgroundColor(Color.argb(100, 50, 50, 50));
mRenderer.setChartTitleTextSize(20);
mRenderer.setLabelsTextSize(15);
mRenderer.setLegendTextSize(15);
mRenderer.setMargins(new int[] { 20, 30, 15, 0 });
mRenderer.setZoomButtonsVisible(true);
mRenderer.setStartAngle(90);
mChartView = ChartFactory.getPieChartView(ctx, mSeries, mRenderer);
LayoutInflater layoutInflater = (LayoutInflater)getBaseContext() .getSystemService(LAYOUT_INFLATER_SERVICE);
View popupView = layoutInflater.inflate(R.layout.main_piechart, null);
final PopupWindow popupWindow = new PopupWindow(popupView, LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
layout = (LinearLayout)popupView.findViewById(R.id.chart);
layout.addView(mChartView);
name1=(EditText) findViewById(R.id.ext1);
name2=(EditText) findViewById(R.id.ext2);
x1=name1.getText().toString();
y1=name2.getText().toString();
NAME_LIST = new String[] { x1 , y1 };
for (int i = 0; i < VALUES.length; i++) {
mSeries.add(NAME_LIST[i] + "(" + VALUES[i]+"%)", VALUES[i]);
SimpleSeriesRenderer renderer = new SimpleSeriesRenderer();
renderer.setColor(COLORS[(mSeries.getItemCount() - 1) % COLORS.length]);
mRenderer.addSeriesRenderer(renderer);
}
if (mChartView != null) {
mChartView.repaint();
}
Button btnDismiss = (Button)popupView.findViewById(R.id.dismiss);
btnDismiss.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
popupWindow.dismiss();
}});
popupWindow.showAsDropDown(btnOpenPopup, 50, -30);
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
});
}
}
}
但问题是，当我打开程序，动画正在运行，然后stopped.the结果不来了。我的要求是第一次动画，然后结果..但只有动画正在运行..我的代码中的问题在哪里？在此先感谢
在日志报告： -
FATAL EXCEPTION: main
Process: in.wptrafficanalyzer.achartenginepiechart, PID: 12831
java.lang.NullPointerException
at android.view.ViewConfiguration.get(ViewConfiguration.java:325)
at android.view.View.<init>(View.java:3483)
at org.achartengine.GraphicalView.<init>(GraphicalView.java:89)
at org.achartengine.ChartFactory.getPieChartView(ChartFactory.java:226)
at in.wptrafficanalyzer.achartenginepiechart.Popup_animation11$TransparentProgressDialog$1.onAnimationEnd(Popup_animation11.java:156)
at android.view.animation.Animation$3.run(Animation.java:374)
at android.os.Handler.handleCallback(Handler.java:808)
at android.os.Handler.dispatchMessage(Handler.java:103)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5324)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)
Popup_animation11中的行号是多少？ – 2015-02-05 12:36:51
layout =（LinearLayout）popupView.findViewById（R.id.chart）; – 2015-02-05 12:43:52