在编一个百度地图校园导航的程序，程序有时候能运行，有时候不能运行，不能运行时会报这个： android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
麻烦各位朋友帮我看看该怎么改OnCreate方法中的代码
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
. . . . . .
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
SDKInitializer.initialize(getApplicationContext());
SDKInitializer.setCoordType(CoordType.BD09LL);
setContentView(R.layout.activity_main);
position=(TextView) findViewById(R.id.position_text_view) ;
accessPermission();
initView();
initLocation();
Button mbutton1=(Button)findViewById(R.id.button1);
mbutton1.setOnClickListener(MainActivity.this);
Button mbutton2=(Button)findViewById(R.id.button2);
mbutton2.setOnClickListener(MainActivity.this);
mbutton3=(Button)findViewById(R.id.button3);
mbutton3.setOnClickListener(MainActivity.this);
mbutton4=(Button)findViewById(R.id.button4);
mbutton4.setOnClickListener(MainActivity.this);
mbutton5=(Button)findViewById(R.id.button5);
mbutton5.setOnClickListener(MainActivity.this);
}
. . . . . .
@Override
public void onClick(View v){
switch(v.getId()){
case R.id.button1:
if((flag%2)==0){
mbutton3.setVisibility(View.VISIBLE);
mbutton4.setVisibility(View.VISIBLE);
mbutton5.setVisibility(View.VISIBLE);
flag+=1;
}else if((flag%2)==1){
mbutton3.setVisibility(View.GONE);
mbutton4.setVisibility(View.GONE);
mbutton5.setVisibility(View.GONE);
flag+=1;
}
break;
case R.id.button2:
initNavi();
startBikeNavi();
break;
case R.id.button3:
Toast.makeText(MainActivity.this,"请在地图上长按您要去的地方设置目的地",Toast.LENGTH_LONG).show();
mbutton3.setVisibility(View.GONE);
mbutton4.setVisibility(View.GONE);
mbutton5.setVisibility(View.GONE);
break;
case R.id.button4:
Toast.makeText(MainActivity.this,"你点击了button2",Toast.LENGTH_LONG).show();
mbutton3.setVisibility(View.GONE);
mbutton4.setVisibility(View.GONE);
mbutton5.setVisibility(View.GONE);
break;
case R.id.button5:
Toast.makeText(MainActivity.this,"你点击了button2",Toast.LENGTH_LONG).show();
mbutton3.setVisibility(View.GONE);
mbutton4.setVisibility(View.GONE);
mbutton5.setVisibility(View.GONE);
break;
default:
break;
}
}
安卓主线程，，，UI线程，，是不允许做耗时操作的，，，
你需要用个new一个子线程去完成耗时操作，，然后给主线程结果。
我到网上查了下，好像是onCreate中有耗时的操作，希望各位给点建议
accessPermission();
initView();
initLocation();
这几个操作该很耗时，应该怎么放呢
耗时的操作new一个子线程去执行啊
new Thread(new Runnable() {
@Override
public void run() {
// 放你执行的操作
}
}).start();
new Thread()
{
public void run()
{
}
}.start();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new Thread()
{
public void run()
{
//此处发你的这些操作
}
}.start();
}