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java当我第三次进入上一个活动时出错

1 周，2 日 Questions & Answers

我试着做一个按钮，它的功能是转到TabWidget中的上一个活动

        btnVolver.setOnClickListener(new OnClickListener() 
        {
            @Override
            public void onClick(View arg0) 
            {
                String className = getIntent().getStringExtra("webpush");
                Class<?> webpushClass = null;
                try {
                    webpushClass = Class.forName(className);
                } catch (ClassNotFoundException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

                 Intent intent = new Intent(getApplicationContext(), webpushClass); 
                 intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
//               intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
//               intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  
//               webPushActivity.this.finishActivity(RESULT_OK);
                 View vista = getLocalActivityManager().startActivity("prueba",
                         intent)
                            .getDecorView();
                       setContentView(vista);

A-->；实际行动。B-->；以前的活动

但是当我从A到B，从B到A，从A到B（第三次点击）时，我得到了下一个错误：

 06-20 09:23:20.256: E/AndroidRuntime(554): FATAL EXCEPTION: main
 06-20 09:23:20.256: E/AndroidRuntime(554):
 java.lang.StackOverflowError
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.text.Styled.measureText(Styled.java:430)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.text.Layout.measureText(Layout.java:1655)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.text.Layout.getLineMax(Layout.java:689)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.text.Layout.draw(Layout.java:340)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.text.BoringLayout.draw(BoringLayout.java:365)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.widget.TextView.onDraw(TextView.java:4050)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6740)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1640)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6743)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1640)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6743)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.widget.FrameLayout.draw(FrameLayout.java:352)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1640)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6743)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.widget.FrameLayout.draw(FrameLayout.java:352)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1640)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6743)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.widget.FrameLayout.draw(FrameLayout.java:352)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1640)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6743)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.widget.FrameLayout.draw(FrameLayout.java:352)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1640)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6743)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.widget.FrameLayout.draw(FrameLayout.java:352)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1640)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6743)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.widget.FrameLayout.draw(FrameLayout.java:352)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1640)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1638)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6743)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.widget.FrameLayout.draw(FrameLayout.java:352)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.drawChild(ViewGroup.java:1640)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.View.draw(View.java:6743)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.widget.FrameLayout.draw(FrameLayout.java:352)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 com.安卓.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1842)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewRoot.draw(ViewRoot.java:1407)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewRoot.performTraversals(ViewRoot.java:1163)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.view.ViewRoot.handleMessage(ViewRoot.java:1727)

 06-20 09:23:20.256: E/AndroidRuntime(554):     at
 安卓.os.Handler.dispatchMess

谢谢


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