Android操作栏导航按钮无法在设备上运行

Question

操作栏向上导航按钮 在模拟器中工作正常但在设备中不起作用任何人都可以帮助我

主要活动

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);     
    setContentView(R.layout.mainpage);

    tf = Typeface.createFromAsset(getAssets(), "font/AGENCYB.TTF");

    Button btnWeatherDetails = (Button) findViewById(R.id.btnWeather);
    Button btnMovieDetails = (Button) findViewById(R.id.btnMovies);
    Button btnHoroscopeDetails = (Button) findViewById(R.id.btnHoroscope);

    btnWeatherDetails.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {               
            Intent i = new Intent(MainActivity.this, WeatherActivity.class);
            MainActivity.this.startActivity(i);
        }
    });


    btnMovieDetails.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {

            Intent i = new Intent(MainActivity.this, MovieActivity.class);
            MainActivity.this.startActivity(i);             
        }
    });

    btnHoroscopeDetails.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {

            Intent i = new Intent(MainActivity.this, HoroscopeActivity.class);
            MainActivity.this.startActivity(i);     
        }
    });

}

@Override
protected void onDestroy() {

    SharedPreferences settingsPreferences = getSharedPreferences(PREF_NAME, MODE_PRIVATE);
    SharedPreferences.Editor settingsEditor= settingsPreferences.edit();
    settingsEditor.putBoolean(MovieActivity.MOVIEUPDATED, false);
    settingsEditor.putBoolean(HoroscopeActivity.HOROSCOPEAVAILABLE, false);
    settingsEditor.commit();

    super.onDestroy();
}

WeatherActivity

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.scrollmain);
    getActionBar().setDisplayHomeAsUpEnabled(true);

    settingsPreferences = getSharedPreferences(MainActivity.PREF_NAME, MODE_PRIVATE);
    SavedString = settingsPreferences.getString(JSONWEATHERSTRING, "Not Found");

    new JSONParse().execute(WeatherUrl);

}

public boolean onCreateOptionMenu(Menu menu)
{
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}


public boolean onOptionItemSelected(MenuItem item)
{
    switch(item.getItemId()){
    case android.R.id.home:
        NavUtils.navigateUpFromSameTask(this);
        return true;
    }
    return super.onOptionsItemSelected(item);
}

public void onBackPressed()
{
    moveTaskToBack(true);
    WeatherActivity.this.finish();
}

MovieActivity

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

    settingsPreferences = getSharedPreferences(MainActivity.PREF_NAME, MODE_PRIVATE);

    MovieJsonString = settingsPreferences.getString(JSONMOVIESTRING, "Not Found");
    isMovieUpdated = settingsPreferences.getBoolean(MOVIEUPDATED, false);

    setContentView(R.layout.main_list_view);        
    getActionBar().setDisplayHomeAsUpEnabled(true);

    movieList = new ArrayList<HashMap<String, String>>();

    list = getListView();
    // Calling async task to get json
    if(!isMovieUpdated)
        new GetMovieDetails().execute();
    else
        GetMoviePreferences();

}

public boolean onCreateOptionMenu(Menu menu)
{
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}


public boolean onOptionItemSelected(MenuItem item)
{
    switch(item.getItemId()){
    case android.R.id.home:
        NavUtils.navigateUpFromSameTask(this);
        return true;
    }
    return super.onOptionsItemSelected(item);
}

public void onBackPressed()
{
    moveTaskToBack(true);
    MovieActivity.this.finish();
}

HoroscopeActivity

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.horoscope);
    getActionBar().setDisplayHomeAsUpEnabled(true);

    settingsPreferences = getSharedPreferences(MainActivity.PREF_NAME, MODE_PRIVATE);

    isHoroAvailable = settingsPreferences.getBoolean(HOROSCOPEAVAILABLE,false);

    if(!isHoroAvailable)
        new XMLParse().execute();
    else
        GetHoroscopeFromPreference();
}

public boolean onCreateOptionMenu(Menu menu)
{
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}


public boolean onOptionItemSelected(MenuItem item)
{
    switch(item.getItemId()){
    case android.R.id.home:
        NavUtils.navigateUpFromSameTask(this);
        return true;
    }
    return super.onOptionsItemSelected(item);
}

public void onBackPressed()
{
    moveTaskToBack(true);
    HoroscopeActivity.this.finish();
}

清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="in.datumdata.weather"
    android:installLocation="auto"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_hosurdata"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="in.datumdata.hosurdata.MainActivity"
            android:label="@string/app_name"
            android:screenOrientation="portrait" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="in.datumdata.hosurdata.MovieActivity"
            android:label="Movie Details"
            android:parentActivityName="in.datumdata.hosurdata.MainActvity"
            android:screenOrientation="portrait" />
        <activity
            android:name="in.datumdata.hosurdata.WeatherActivity"
            android:label="Weather Details"
            android:parentActivityName="in.datumdata.hosurdata.MainActvity"
            android:screenOrientation="portrait" />
        <activity
            android:name="in.datumdata.hosurdata.SingleContactActivity"
            android:label="Movie Details"
            android:parentActivityName="in.datumdata.hosurdata.MovieActivity"
            android:screenOrientation="portrait" />
        <activity
            android:name="in.datumdata.hosurdata.HoroscopeActivity"
            android:label="Horoscope Details"
            android:parentActivityName="in.datumdata.hosurdata.MainActvity"
            android:screenOrientation="portrait" />
        <activity
            android:name="in.datumdata.hosurdata.SingleHoroscopeActivity"
            android:label="Horoscope Details"
            android:parentActivityName="in.datumdata.hosurdata.HoroscopeActivity"
            android:screenOrientation="portrait" />
    </application>

</manifest>

在以上所有活动中的导航按钮 在模拟器中工作正常，但在设备上它不起作用，当我按下设备上的后退按钮 应用程序变得不可见我的意思是说它在后台运行。 这件事发生在我按下按钮的任何活动的所有活动上同样的事情发生

帮帮我。 提前谢谢，抱歉我的英语不好。

Answer 1

您应该使用Up按钮的元数据标签来处理旧的API：

        android:parentActivityName=".MainActivity">
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="MainActivity" />

编辑：

您已经拥有parentActivityName，因此只将元标记添加到AndroidManifest.xml文件的标记中。 像这样：

    <activity
        android:name="in.datumdata.hosurdata.MovieActivity"
        android:label="Movie Details"
        android:parentActivityName="in.datumdata.hosurdata.MainActvity"
        android:screenOrientation="portrait">
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="in.datumdata.hosurdata.MainActvity" />
    </activity>

Answer 2

你这样做的地方：

getActionBar().setDisplayHomeAsUpEnabled(true);

试着这样做：

getSupportActionBar().setDisplayHomeAsUpEnabled(true);

Answer 3

我在支持操作栏上遇到问题，如果您使用支持操作栏，那么您需要在代码中添加此行。

getSupportActionBar().setDisplayHomeAsUpEnabled(true);

在清单中你需要添加

<meta-data
    android:name="android.support.PARENT_ACTIVITY"
    android:value="com.example.ParentActivity" />

因此清单中的活动声明将如下所示：

<activity
    android:name="com.example.MyActivity"
    android:label="My Activity">
    <meta-data
        android:name="android.support.PARENT_ACTIVITY"
        android:value="com.example.ParentActivity" />
</activity>

如果您使用的API级别低于16，则无法在清单中的活动声明中添加android:parentActivityName="com.example.ParentActivity" 。

Answer 4

如果从多个活动调用您的活动并指定父活动不适合您的用例，那么您可以通过添加以下内容来修复它：

    getSupportActionBar().setDisplayHomeAsUpEnabled(true);  (in onCreate)


    @Override
    public boolean onNavigateUp() {
        finish();
        return true;
    }

    @Override
    public boolean onSupportNavigateUp() {
        finish();
        return true;
    }