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java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()解決辦法
android Toast提示異常：java.lang.RuntimeException: Can't create handler inside thread that has not called
原因是在子線程彈Toast了， 切記，Toast只能在UI線程彈出
解決辦法：
new Thread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
try {
Thread.sleep(1000);
handler.sendEmptyMessage(0);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}).start();
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
Toast.makeText(CommodityDetails.this, "修改失敗！", Toast.LENGTH_SHORT).show();
} };
完美解決！！！