android - 从后台恢复 Android 应用程序后，它卡住了

Question

问题

我按下主页按钮，当我从启动图标重新打开应用程序时，我失去了部分布局，一切都卡住了。我仍然可以使用 android 界面(主页按钮等)

背景状态之前

卡住

如果你需要的话，这是这个。

OnResume 方法

@Override
    protected void onResume() {

        super.onResume();
        setContentView(R.layout.main);


    }

创建时

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);              

    INSTANCE = this;

    Constants.initializeConstantsFromResources(this);

    Controller.getInstance().setPreferences(PreferenceManager.getDefaultSharedPreferences(this));       

    if (Controller.getInstance().getPreferences().getBoolean(Constants.PREFERENCES_SHOW_FULL_SCREEN, false)) {          
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    }

    if (Controller.getInstance().getPreferences().getBoolean(Constants.PREFERENCES_GENERAL_HIDE_TITLE_BARS, true)) {
        requestWindowFeature(Window.FEATURE_NO_TITLE);
    }

    setProgressBarVisibility(true);

    setContentView(R.layout.main);                        

    mCircularProgress = getResources().getDrawable(R.drawable.spinner);

    EventController.getInstance().addDownloadListener(this);                

    mHideToolbarsRunnable = null;

    mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    buildComponents();                

    mViewFlipper.removeAllViews();   

    updateSwitchTabsMethod();
    updateBookmarksDatabaseSource();

    registerPreferenceChangeListener();

    Intent i = getIntent();
    if (i.getData() != null) {
        // App first launch from another app.
        addTab(false);
        navigateToUrl(i.getDataString());
    } else {
        // Normal start.
        int currentVersionCode = ApplicationUtils.getApplicationVersionCode(this);
        int savedVersionCode = PreferenceManager.getDefaultSharedPreferences(this).getInt(Constants.PREFERENCES_LAST_VERSION_CODE, -1);

        // If currentVersionCode and savedVersionCode are different, the application has been updated.
        if (currentVersionCode != savedVersionCode) {
            // Save current version code.
            Editor editor = PreferenceManager.getDefaultSharedPreferences(this).edit();
            editor.putInt(Constants.PREFERENCES_LAST_VERSION_CODE, currentVersionCode);
            editor.commit();

            // Display changelog dialog.
            Intent changelogIntent = new Intent(this, ChangelogActivity.class);
            startActivity(changelogIntent);
        }

        boolean lastPageRestored = false;
        // gaf - comienzo con la pagina inicial
        String savedUrl = "file:///android_asset/startpage/index.html";
        //String savedUrl = "http://servidor-cade.com";
        //String savedUrl = "http://192.168.1.18:3636";
        addTab(false);
        navigateToUrl(savedUrl);
        lastPageRestored = false;



    }

    initializeWebIconDatabase();

    startToolbarsHideRunnable();
}

Answer 1

首先:

setContentView(R.layout.main);

应该在:

之后

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState); 

第二:不要在 OnResume 上设置 setContentView(R.layout.main);。 bundle 将保存状态。删除该行。

当您恢复应用程序时，布局会再次显示(甚至可能覆盖当前布局)。

第三:你的代码不干净，组织也不好。例如:检查当前版本以显示更改日志应该在 setContentView(R.layout.main); 之后(遵循“First”)

编辑您的onCreate 应该是这样的:

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

    Constants.initializeConstantsFromResources(this);

    Controller.getInstance().setPreferences(PreferenceManager.getDefaultSharedPreferences(this));       

    if (Controller.getInstance().getPreferences().getBoolean(Constants.PREFERENCES_SHOW_FULL_SCREEN, false)) {          
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    }

    if (Controller.getInstance().getPreferences().getBoolean(Constants.PREFERENCES_GENERAL_HIDE_TITLE_BARS, true)) {
        requestWindowFeature(Window.FEATURE_NO_TITLE);
    }
setContentView(R.layout.main);