为什么android中的UI视图更新不能放在子线程中

[AspireHouse]

为什么android中的UI视图更新不能放在子线程中操作

[biaozai06]

得看看SDK中的说明，莫非跟沙盒机制有关？

[shenxiaolinil]

贴出部分代码看看？

[AspireHouse]

public void run() {
    while(progress<100){		
	progress = progress + 1;
	try {
           textView.setText(progress+"%");//这边异常
	   Thread.sleep(1000);
	} catch (InterruptedException e) {
	   e.printStackTrace();
	}
    }
}			

异常代码：
Only the original thread that created a view hierarchy can touch its views

[shenxiaolinil]

public class ClicktextApp extends Activity {
private Thread myRefreshThread = null;
private ClickText ct = null;
protected static final int GUIUPDATEIDENTIFIER = 0x101;

// 自定义Handler 继随自Handler，需要实现handleMessage方法，用以接受消息！
Handler myHandler = new Handler() {
public void handleMessage(Message msg) {//处理消息
switch (msg.what) {
case ClicktextApp.GUIUPDATEIDENTIFIER:
ct.invalidate();// 更新视图UI
break;
}
super.handleMessage(msg);
}
};

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ct = new ClickText(this);///////自定义的VIEW
setContentView(ct);
new Thread(new myThread()).start();// 启动线程

}

class myThread implements Runnable {
public void run() {
while (!Thread.currentThread().isInterrupted()) {

Message message = new Message();// 生成消息，并赋予ID值
message.what = ClicktextApp.GUIUPDATEIDENTIFIER;
myHandler.sendMessage(message);// 投递消息
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
}

}

[AspireHouse]

已经解决了，android的UI操作只能放在UI线程中
Handler是个不错的解决的方法

[xiaoyao3857]

受益了，望多多讨论！