我的应用程序只是建立,从不安装在实际设备上的apk(Android的工作室) [英] My app just building and never installs apk on actual device(Android Studio)

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问题描述

所以在运行应用程序后,我得到这个摇篮控制台 APK 从未安装在我的设备上从而应用永远不会显示。

摇篮控制台:

 执行任务:[:应用:assembleDebug]按需配置是一个孵化功能。
:应用程序:preBuild UP-TO-DATE
:应用程序:preDebugBuild UP-TO-DATE
:应用:checkDebugManifest
:应用程序:preReleaseBuild UP-TO-DATE
:应用程序:prepareComAndroidSupportAppcompatV72311Library UP-TO-DATE
:应用程序:prepareComAndroidSupportDesign2311Library UP-TO-DATE
:应用程序:prepareComAndroidSupportRecyclerviewV72311Library UP-TO-DATE
:应用程序:prepareComAndroidSupportSupportV42311Library UP-TO-DATE
:应用程序:prepareDebugDependencies
:应用:compileDebugAidl UP-TO-DATE
:应用:compileDebugRenderscript UP-TO-DATE
:应用:generateDebugBuildConfig UP-TO-DATE
:应用:generateDebugAssets UP-TO-DATE
:应用:mergeDebugAssets UP-TO-DATE
:应用:generateDebugResValues​​ UP-TO-DATE
:应用:generateDebugResources UP-TO-DATE
:应用:mergeDebugResources UP-TO-DATE
:应用:processDebugManifest UP-TO-DATE
:应用:processDebugResources UP-TO-DATE
:应用:generateDebugSources UP-TO-DATE
:应用:compileDebugJavaWithJavac UP-TO-DATE
:应用:compileDebugNdk UP-TO-DATE
:应用:compileDebugSources UP-TO-DATE
:应用:transformClassesWithDexForDebug UP-TO-DATE
:应用:mergeDebugJniLibFolders UP-TO-DATE
:应用:transformNative_libsWithMergeJniLibsForDebug UP-TO-DATE
:应用:processDebugJavaRes UP-TO-DATE
:应用:transformResourcesWithMergeJavaResForDebug UP-TO-DATE
:应用:validateDebugSigning
:应用:packageDebug UP-TO-DATE
:应用:zipalignDebug UP-TO-DATE
:应用:assembleDebug UP-TO-DATEBUILD SUCCESSFUL总时间:2.534秒

Manifes:

 <?XML版本=1.0编码=UTF-8&GT?;
<清单的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    包=com.search.lyrics.limbo>    <应用
        机器人:allowBackup =真
        机器人:图标=@的mipmap / ic_launcher
        机器人:标签=@字符串/ APP_NAME
        机器人:supportsRtl =真
        机器人:主题=@风格/ AppTheme>
        <活动
            机器人:名字=。MainActivity
            机器人:标签=@字符串/ title_activity_main
            机器人:主题=@风格/ AppTheme.NoActionBar>
            &所述;意图滤光器>
                <作用机器人:名字=android.intent.action.Main/>
                <类机器人:名字=android.intent.category.LAUNCHER/>
            &所述; /意图滤光器>
        < /活性GT;
    < /用途>< /清单>

也许问题是我的表现?
这只是一个新的Andr​​oid项目以空白活动。我什么都没有做的code,除了在清单中添加意图过滤器标记。

任何建议将是非常美联社preciated。

修改
我得到当我试图运行这一行:
无法识别推出活动:找不到默认的活动

MainActivity.java:

 公共类MainActivity扩展AppCompatActivity {    @覆盖
    保护无效的onCreate(捆绑savedInstanceState){
        super.onCreate(savedInstanceState);
        的setContentView(R.layout.activity_main);
        工具条工具栏=(栏)findViewById(R.id.toolbar);
        setSupportActionBar(工具栏);        FloatingActionButton FAB =(FloatingActionButton)findViewById(R.id.fab);
        fab.setOnClickListener(新View.OnClickListener(){
            @覆盖
            公共无效的onClick(查看视图){
                Snackbar.make(看来,用自己的行动替换,Snackbar.LENGTH_LONG)
                        .setAction(动作,NULL).show();
            }
        });
    }}


解决方案

操作名称是大小写敏感的,所以你需要更新象在意图过滤低于

 <作用机器人:名字=android.intent.action.MAIN/>

So after running the app i get this Gradle Console and the apk is never installed on my device thus the app is never shown.

Gradle Console:

Executing tasks: [:app:assembleDebug]

Configuration on demand is an incubating feature.
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72311Library UP-TO-DATE
:app:prepareComAndroidSupportDesign2311Library UP-TO-DATE
:app:prepareComAndroidSupportRecyclerviewV72311Library UP-TO-DATE
:app:prepareComAndroidSupportSupportV42311Library UP-TO-DATE
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:processDebugManifest UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources UP-TO-DATE
:app:compileDebugJavaWithJavac UP-TO-DATE
:app:compileDebugNdk UP-TO-DATE
:app:compileDebugSources UP-TO-DATE
:app:transformClassesWithDexForDebug UP-TO-DATE
:app:mergeDebugJniLibFolders UP-TO-DATE
:app:transformNative_libsWithMergeJniLibsForDebug UP-TO-DATE
:app:processDebugJavaRes UP-TO-DATE
:app:transformResourcesWithMergeJavaResForDebug UP-TO-DATE
:app:validateDebugSigning
:app:packageDebug UP-TO-DATE
:app:zipalignDebug UP-TO-DATE
:app:assembleDebug UP-TO-DATE

BUILD SUCCESSFUL

Total time: 2.534 secs

Manifes:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.search.lyrics.limbo">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.Main"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
    </application>

</manifest>

Maybe the problem is with my manifest? It's just a new Android project with a Blank Activity. I did nothing to the code except for adding the intent filter tag in the manifest.

Any suggestions would be very appreciated.

EDIT I get this line when I'm trying to run: Could not identify launch activity: Default Activity not found

MainActivity.java:

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });
    }

}

解决方案

The action name is case sensitive so you need to update Main to MAIN like below in your intent-filter.

<action android:name="android.intent.action.MAIN"/>

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