java – 在AsyncTask中添加视图(文本视图)
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了java – 在AsyncTask中添加视图(文本视图)，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含3743字，纯文字阅读大概需要6分钟。
内容图文
我使用下面的代码在Async任务中添加文本视图但是：
07-26 11:40:39.302: E/AndroidRuntime(26715): Uncaught handler: thread AsyncTask #1 exiting due to uncaught exception
07-26 11:40:39.312: E/AndroidRuntime(26715): java.lang.RuntimeException: An error occured while executing doInBackground()
07-26 11:40:39.312: E/AndroidRuntime(26715): at android.os.AsyncTask$3.done(AsyncTask.java:200)
07-26 11:40:39.312: E/AndroidRuntime(26715): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
07-26 11:40:39.312: E/AndroidRuntime(26715): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
07-26 11:40:39.312: E/AndroidRuntime(26715): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
07-26 11:40:39.312: E/AndroidRuntime(26715): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
07-26 11:40:39.312: E/AndroidRuntime(26715): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
07-26 11:40:39.312: E/AndroidRuntime(26715): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
07-26 11:40:39.312: E/AndroidRuntime(26715): at java.lang.Thread.run(Thread.java:1096)
07-26 11:40:39.312: E/AndroidRuntime(26715): Caused by: android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
07-26 11:40:39.312: E/AndroidRuntime(26715): at android.view.ViewRoot.checkThread(ViewRoot.java:2683)
07-26 11:40:39.312: E/AndroidRuntime(26715): at android.view.ViewRoot.invalidateChild(ViewRoot.java:570)
07-26 11:40:39.312: E/AndroidRuntime(26715): at android.view.ViewRoot.invalidateChildInParent(ViewRoot.java:596)
07-26 11:40:39.312: E/AndroidRuntime(26715): at android.view.ViewGroup.invalidateChild(ViewGroup.java:2481)
07-26 11:40:39.312: E/AndroidRuntime(26715): at android.view.View.invalidate(View.java:5027)
07-26 11:40:39.312: E/AndroidRuntime(26715): at android.view.ViewGroup.addView(ViewGroup.java:1840)
07-26 11:40:39.312: E/AndroidRuntime(26715): at android.view.ViewGroup.addView(ViewGroup.java:1821)
07-26 11:40:39.312: E/AndroidRuntime(26715): at com.learning.chiazi.MainActivity.addTextView(MainActivity.java:180)
07-26 11:40:39.312: E/AndroidRuntime(26715): at com.learning.chiazi.MainActivity$Proccess.doInBackground(MainActivity.java:243)
07-26 11:40:39.312: E/AndroidRuntime(26715): at com.learning.chiazi.MainActivity$Proccess.doInBackground(MainActivity.java:1)
07-26 11:40:39.312: E/AndroidRuntime(26715): at android.os.AsyncTask$2.call(AsyncTask.java:185)
07-26 11:40:39.312: E/AndroidRuntime(26715): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
07-26 11:40:39.312: E/AndroidRuntime(26715): ... 4 more
07-26 11:40:39.342: E/SemcCheckin(26715): Get crash dump level : java.io.FileNotFoundException: /data/semc-checkin/crashdump
我该如何解决这个问题？
码：
public void addTextView(int belowId, int id,String text){
RelativeLayout rSub= (RelativeLayout) findViewById(R.id.rSub);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.BELOW, belowId);
lp.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
TextView tv = new TextView(this);
tv.setId(id);
tv.setText(text+"\n");
rSub.addView(tv, lp);
}
class Proccess extends AsyncTask<Void, Void, Void>{
@Override
protected Void doInBackground(Void... arg0) {
addTextView(R.id.tvResult, 1234, "s");
return null;
}
}
解决方法:
像这样在后台方法中运行UI线程
@Override
protected Void doInBackground(Void... arg0) {
this.runOnUiThread(new Runnable() {
public void run() {
addTextView(R.id.tvResult, 1234, "s");
});
return null;
}
内容总结
以上是互联网集市为您收集整理的java – 在AsyncTask中添加视图(文本视图)全部内容，希望文章能够帮你解决java – 在AsyncTask中添加视图(文本视图)所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错，欢迎将互联网集市网站推荐给程序员好友。
内容备注
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 gblab@vip.qq.com 举报，一经查实，本站将立刻删除。
内容手机端
扫描二维码推送至手机访问。
来源：【匿名】