在这里，我打电话给一个活动，这是一个聊天应用程序。
catLog：
02-26 12:30:38.996: I/Choreographer(807): Skipped 35 frames! The application may be doing too much work on its main thread.
02-26 12:30:39.196: I/Choreographer(807): Skipped 31 frames! The application may be doing too much work on its main thread.
02-26 12:30:39.516: I/Choreographer(807): Skipped 31 frames! The application may be doing too much work on its main thread.
02-26 12:30:39.996: I/Choreographer(807): Skipped 32 frames! The application may be doing too much work on its main thread.
02-26 12:30:40.066: I/Choreographer(807): Skipped 37 frames! The application may be doing too much work on its main thread.
02-26 12:30:40.207: I/Choreographer(807): Skipped 33 frames! The application may be doing too much work on its main thread.
02-26 12:30:40.896: I/Choreographer(807): Skipped 33 frames! The application may be doing too much work on its main thread.
02-26 12:30:41.586: I/Choreographer(807): Skipped 30 frames! The application may be doing too much work on its main thread.
02-26 12:30:42.266: I/Choreographer(807): Skipped 30 frames! The application may be doing too much work on its main thread.
02-26 12:30:42.486: I/Choreographer(807): Skipped 31 frames! The application may be doing too much work on its main thread.
02-26 12:30:42.556: I/Choreographer(807): Skipped 37 frames! The application may be doing too much work on its main thread.
02-26 12:30:42.826: I/Choreographer(807): Skipped 32 frames! The application may be doing too much work on its main thread.
02-26 12:30:43.316: I/Choreographer(807): Skipped 30 frames! The application may be doing too much work on its main thread.
02-26 12:30:43.777: I/Choreographer(807): Skipped 30 frames! The application may be doing too much work on its main thread.
02-26 12:30:43.826: I/Choreographer(807): Skipped 32 frames! The application may be doing too much work on its main thread.
02-26 12:30:43.866: I/Choreographer(807): Skipped 34 frames! The application may be doing too much work on its main thread.
. . . . .
. . . . .
. . . . .
这是我从MainActivity开始活动的方式：
public class MainActivity extends Activity {
Handler handler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b = (Button) findViewById(R.id.button1);
handler = new Handler(Looper.getMainLooper());
b.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final Intent i = new Intent(com.example.mainactivity.MainActivity.this,com.quickblox.sample.chat.ui.activities.SplashActivity.class);
handler.post(new Runnable() {
@Override
public void run() {
startActivity(i);
}
});
如何防止这种情况，应用程序在调用activity后挂起。看错了什么？
更新：
SplashActivity：
public class SplashActivity extends Activity implements QBCallback {
private static final String APP_ID = "7467";
private static final String AUTH_KEY = "TxRFWfX8tTXQ4gv";
private static final String AUTH_SECRET = "y-QJrO2j69VTaCs";
private ProgressBar progressBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
QBSettings.getInstance().fastConfigInit(APP_ID, AUTH_KEY, AUTH_SECRET);
QBAuth.createSession(this);
}
@Override
public void onComplete(Result result) {
progressBar.setVisibility(View.GONE);
if (result.isSuccess()) {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
finish();
} else {
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setMessage("Error(s) occurred. Look into DDMS log for details, " +
"please. Errors: " + result.getErrors()).create().show();
}
}
@Override
public void onComplete(Result result, Object context) {
}
}
更新：
您可以在this主题中找到详细信息。
答案 0 :(得分：7)
startActivity(i);只需向系统发送一个Intent。所以你不需要在单独的线程中启动活动。
相反，您应该在另一个帖子中使用SplashActivity onCreate方法完成所有艰苦工作。
public class MainActivity extends Activity {
//...
@Override
protected void onCreate(Bundle savedInstanceState) {
//...
final Intent intent = new Intent(this,SplashActivity.class);
startActivity(intent);
}
}
public class SplashActivity extends Activity {
//...
@Override
protected void onCreate(Bundle savedInstanceState) {
//...
new Thread(new Runnable()
{
@Override
public void run() {
//do loading data or whatever hard here
runOnUiThread(new Runnable(){
@Override
public void run() {
//..update your UI here
}
});
}
}).start();
}
}
请记住，您只能在主Android（通常称为UI）线程上更新您的UI。
我建议您的QBAuth.createSession(this);正在打开某种Http连接，这就是为什么你的应用程序会冻结。将其移至单独的线程。
更新：
public class SplashActivity extends Activity{
private static final String APP_ID = "7467";
private static final String AUTH_KEY = "TxRFWfX8tTXQ4gv";
private static final String AUTH_SECRET = "y-QJrO2j69VTaCs";
public static class QBAuth{
private static QBCallback mQBCallback;
public static void createSession(QBCallback qbCallback) {
// do request initialization
mQBCallback = qbCallback;
}
}
public interface QBCallback{
public void onComplete(Result result);
public void onComplete(Result result, Object context);
}
public class Result{
boolean isSuccess;
String errors;
public boolean isSuccess() {
return isSuccess;
}
public void setSuccess(boolean isSuccess) {
this.isSuccess = isSuccess;
}
public String getErrors() {
return errors;
}
public void setErrors(String errors) {
this.errors = errors;
}
}
private ProgressBar progressBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
new Thread(new Runnable() {
@Override
public void run() {
QBSettings.getInstance().fastConfigInit(APP_ID, AUTH_KEY, AUTH_SECRET);
QBAuth.createSession(mQBCallback);
}
});
}
private QBCallback mQBCallback = new QBCallback() {
@Override
public void onComplete(Result result) {
handleResult(result);
}
@Override
public void onComplete(Result result, Object context) {
}
};
private void handleResult(final Result result) {
runOnUiThread(new Runnable() {
@Override
public void run() {
progressBar.setVisibility(View.GONE);
if (result.isSuccess()) {
Intent intent = new Intent(SplashActivity.this, MainActivity.class);
startActivity(intent);
finish();
} else {
AlertDialog.Builder dialog = new AlertDialog.Builder(SplashActivity.this);
dialog.setMessage("Error(s) occurred. Look into DDMS log for details, " +
"please. Errors: " + result.getErrors()).create().show();
}
}
});
}
}
答案 1 :(得分：3)
首先，主要活动中的处理程序完全没用。系统在UI线程上调用onClick回调，并且您的处理程序也绑定到UI线程，因此您可以不使用它。但我怀疑你是在那里遇到问题，这只是一个小小的开销。
您可能想尝试移动电话
QBSettings.getInstance().fastConfigInit(APP_ID, AUTH_KEY, AUTH_SECRET);
QBAuth.createSession(this);
到后台线程，但是可能会在UI线程上调用它们，这会导致一些问题。
由于您的代码是1：1，代码在这里：https://github.com/QuickBlox/quickblox-android-sdk/tree/master/sample-chat，我首先尝试使用示例应用来检查问题是否也可以在那里看到。如果是，只需在github projet中打开一个问题：）
如果不是，那么你的做法有所不同，我们需要更多代码来调查...
答案 2 :(得分：1)
尝试更改：
android:label="@string/app_name"
从您的被叫活动中剪切，然后粘贴您的启动器活动。
<activity android:name="com.quickblox.sample.chat.Launch"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>