我需要帮助解决一个我真正不明白的问题。
我正在处理我使用真实设备进行调试的应用。我有两个,第一个是具有低资源(Android 5.0.2)的摩托罗拉,这有助于我捕获更多错误;在这一个应用程序扼杀完美地工作。第二个设备是 Nexus 6(Android 6.0.1),其中应用非常糟糕,它变得非常慢(即使没有做任何事情,例如打开菜单)它向我显示了这样一条消息:跳过33帧!应用程序可能在其主线程上做了太多工作。
我必须使用asynk任务,并且我使用主线程来减少我能做的事情。正如我之前所说,它显示了" skkiped框架"即使我只打开一个菜单(这意味着我没有下载或做一些奇怪的事情)的消息。该应用程序永远不会崩溃,但速度极慢。
我已在SDK管理器上安装了所有内容。
我将向您解释一个示例,其中我的应用程序变慢并向您显示代码。在我的主要活动中,我有一个带有NavigationView的工具栏,所以当我点击"菜单按钮"打开它,打开它需要3秒钟。
MainActivity代码:
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener, View.OnClickListener {
private Toolbar toolbar;
//private FloatingActionButton fab;
private DrawerLayout drawer;
private ActionBarDrawerToggle toggle;
private NavigationView navigationView;
private FragmentManager fragmentManager;
private FragmentTransaction fragmentTransaction;
private static final String TAG = "MainActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initMaterialDesign();
if (savedInstanceState == null){
showFragment(Constants.FRAGMENT_MENU);
navigationView.getMenu().getItem(0).setChecked(true);
getSupportActionBar().setTitle("Menú");
} else{
}
}
private void initMaterialDesign(){
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
/*fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(this);*/
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
//@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_menu) {
getSupportActionBar().setTitle("Menú");
showFragment(Constants.FRAGMENT_VALORES);
} /*else if (id == R.id.nav_gallery) {
item.setChecked(true);
} */else if (id == R.id.nav_contactanos) {
contactanos();
} /*else if (id == R.id.nav_manage) {
item.setChecked(true);
}*/else if (id == R.id.nav_logut) {
logOut();
}
drawer.closeDrawer(GravityCompat.START);
return true;
}
@Override
public void onClick(View v) {
switch (v.getId()){
/* case R.id.fab:
Snackbar.make(v, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
break;*/
}
}
private void showFragment(int fragment){
fragmentManager = getSupportFragmentManager();
fragmentTransaction = fragmentManager.beginTransaction();
switch (fragment){
/*case Constants.FRAGMENT_VALORES:
ValoresFragment valoresFragment = new ValoresFragment();
fragmentTransaction.replace(R.id.main_act_contenedorFragments, valoresFragment);
break;
case Constants.FRAGMENT_NOTICIAS:
break;
case Constants.FRAGMENT_WATCHLIST:
break;
case Constants.FRAGMENT_PORTFOLIO:
break;*/
case Constants.FRAGMENT_MENU:
MenuFragment menuFragment = new MenuFragment();
fragmentTransaction.replace(R.id.main_act_contenedorFragments, menuFragment);
break;
}
fragmentTransaction.commit();
}
private void logOut(){
new SweetAlertDialog(this, SweetAlertDialog.WARNING_TYPE)
.setTitleText(getString(R.string.nav_logout))
.setContentText(getString(R.string.seguro_logout))
.showCancelButton(true)
.setConfirmText(getString(R.string.aceptar))
.setCancelText(getString(R.string.cancelar))
.setCancelClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sDialog) {
sDialog.dismiss();
}
})
.setConfirmClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sDialog) {
sDialog.dismissWithAnimation();
borrarSPUser();
irLoginAct();
MainActivity.this.finish();
}
})
.show();
}
private void borrarSPUser(){
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("usuario", "");
editor.putString("pass", "");
editor.commit();
}
private void irLoginAct(){
Intent intentRegistroActivity = new Intent(MainActivity.this, LoginActivity.class);
startActivity(intentRegistroActivity);
}
private void contactanos(){
final Intent emailIntent = new Intent(Intent.ACTION_SENDTO, Uri.parse("mailto:"));
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[]{"comunica@gmail.com"});
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "My App");
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Cuéntanos lo que quieras sobre la bolsa");
startActivity(Intent.createChooser(emailIntent, "Elegir cliente:"));
}
}
我知道这段代码不会帮助你获得答案,但我只想告诉你我没有做任何奇怪的事。
这是logcat:
04-14 12:34:28.596 8419-8419/? I/art: Late-enabling -Xcheck:jni
04-14 12:34:28.646 8419-8419/? W/System: ClassLoader referenced unknown path: /data/app/com.myapp-1/lib/arm
04-14 12:34:28.677 8419-8419/? V/Aplicacion: initParse: Parse iniciado
04-14 12:34:28.725 8419-8425/? I/art: Debugger is no longer active
04-14 12:34:28.764 8419-8445/? D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
04-14 12:34:28.815 8419-8445/? I/Adreno: QUALCOMM build : 52af4d2, I8366cd0437
Build Date : 10/20/15
OpenGL ES Shader Compiler Version: XE031.05.13.02
Local Branch : M14
Remote Branch :
Remote Branch :
Reconstruct Branch :
04-14 12:34:28.819 8419-8445/? I/OpenGLRenderer: Initialized EGL, version 1.4
04-14 12:34:31.008 8419-8419/com.myapp V/LoadingActivity: DescargarAcciones >> Lista Acciones guardada en Application class
04-14 12:34:32.369 8419-8419/com.myapp V/LoadingActivity: getLastUpdate >> UPDATE
04-14 12:34:33.216 8419-8425/com.myapp W/art: Suspending all threads took: 28.414ms
04-14 12:34:33.663 8419-8419/com.myapp V/LoadingActivity: descargarHistorial >> historialIbex35 descargado y guardado
04-14 12:34:33.664 8419-8419/com.myapp V/LoadingActivity: modificarUltimoUpdate - Void done >> update realizado
04-14 12:34:34.000 8419-8419/com.myapp V/LoadingActivity: descargarRanking >> EXITO
04-14 12:34:34.000 8419-8419/com.myapp V/LoadingActivity: parsearRanking >> listaRanking guardada correctamente
04-14 12:34:34.211 8419-8425/com.myapp W/art: Suspending all threads took: 22.491ms
04-14 12:34:34.915 8419-8419/com.myapp I/Choreographer: Skipped 32 frames! The application may be doing too much work on its main thread.
04-14 12:48:33.438 8419-8419/com.myapp I/Choreographer: Skipped 35 frames! The application may be doing too much work on its main thread.
04-14 12:48:42.979 8419-8419/com.myapp I/Choreographer: Skipped 32 frames! The application may be doing too much work on its main thread.
04-14 12:48:43.537 8419-8419/com.myapp I/Choreographer: Skipped 33 frames! The application may be doing too much work on its main thread.
我真的不知道发生了什么。我想要记住,这在低资源设备上完美运行,并且它在好的设备上运行得非常慢。我已经上网了,但我没有找到任何东西。如果有人能给我一个提示,那将非常感激。提前完成。
答案 0 :(得分:3)
经过长时间寻找我的问题的答案,我没有找到任何解决方法,但我得到了一些帮助我得到答案的一些提示。
我找到了一些答案,这些答案表明问题可能是由资源(drawables)造成的,但我确信我的drawables已针对我的应用程序的每个屏幕密度进行了适当的调整。
问题在于我错误地认为Nexus 6(以及不是平板电脑的每台设备)的屏幕密度都是从ldpi到xxhdpi。在这种情况下,Nexus 6的屏幕密度为DisplayMetrics.DENSITY_560
,因此我们可以找到here,它位于DENSITY_XXHIGH(480 dpi)和DENSITY_XXXHIGH之间的屏幕的
中间密度(640 dpi)。所以文档说:
这不是应用程序应该定位的密度,而是依靠系统为它们扩展DENSITY_XXXHIGH资产。
总之,问题是在试图为Nexus 6屏幕密度进行缩放时引起的,因此应用程序进入无限循环。
最后我创建了xxxhdpi-drawable
文件夹,问题解决了。
很难为我检测到这一点,因为我对整个应用程序都有相同的背景,所以自从我启动应用程序后,每次活动都出错了,没有没有背景或不同背景的活动可以正常工作。
我希望这可以帮助那些遇到同样问题的人。