Question

我正在创建我的第一个应用程序但是当我在我的设备中安装apk文件时，当我尝试打开它时它会崩溃。我无法找到问题，因此我会发布代码的开头。该应用程序以SplashActivity

开头

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class SplashActivity extends AppCompatActivity {

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

    Intent intent = new Intent(this, Home.class);
    startActivity(intent);

}
}

然后家庭活动应该开始

public class Home extends AppCompatActivity {

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

    getIntent();

    String[] names= new String[]{"Albums","By Era", "Members", "Eddie", "Fan Arts", "Ed Force One"};
    int []imageId = new int[]{R.drawable.albums, R.drawable.era, R.drawable.members, R.drawable.eddie, R.drawable.fanarts, R.drawable.edforceone };

    CustomGrid adapter = new CustomGrid( Home.this, names, imageId);
    final GridView grid_main = (GridView) findViewById(R.id.grid_main);
    grid_main.setAdapter(adapter);

    grid_main.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
            // selection
            String maincat="";
            switch (grid_main.getCheckedItemPosition()){
                case R.id.albums:
                    maincat="Albums";
                    break;
                case R.id.era:
                    maincat="By Era";
                    break;
                case R.id.member:
                    maincat="Members";
                    break;
                case R.id.eddie:
                    maincat="Eddie";
                    break;
                case R.id.arts:
                    maincat="Fan arts";
                    break;
                case R.id.ed:
                    maincat="Ed Force One";
                    break;

            }
            //start different activities
            if ( maincat.equals("Eddie") || maincat.equals("Ed Force One") || maincat.equals("Fan arts")){
                Intent intent= new Intent(Home.this, Pictures.class);
                intent.putExtra("maincat", maincat);
                startActivity(intent);}
            else {
                Intent intent= new Intent(Home.this, SubActivity.class);
                intent.putExtra("maincat", maincat);
                startActivity(intent);}
        }

    });

}
@Override
// overflow menu
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu1, menu);
    return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
        case R.id.about:
            Intent intent= new Intent(Home.this, About.class);
            startActivity(intent);
            return true;
        case R.id.contacts:
            Intent intent2= new Intent(Home.this, Contacts.class);
            startActivity(intent2);
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}
}

以下是有关活动的清单部分

<activity android:name=".Home">
    </activity>
    <activity
        android:name=".SubActivity"
        android:parentActivityName=".Home" />
    <activity
        android:name=".About"
        android:parentActivityName=".Home" />
    <activity
        android:name=".Contacts"
        android:parentActivityName=".Home" />
    <activity
        android:name=".Pictures"
        android:parentActivityName=".Home">
    </activity>
    <activity
        android:name=".ViewPic"
        android:parentActivityName=".Home">
    </activity>
    <activity android:name=".SplashActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

该应用程序有一个巨大的资产文件夹，但即使删除它，该应用程序也无法运行。我验证了minimun sdk版本（19）与我的Android设备版本（4.4）相同。必须说我不能使用Android Studio模拟器，因为我的硬件已经过时了：/

Answer 1

我无法发表评论，所以我必须使用asnwers。

这是什么意思%zu？为什么不能从Android Studio测试它？

除此之外，还缺少很多代码。 I can't even test on my device because it doesn't have the option to do so中有很多Activity，但您只发布了2，Manifest的{{1}}看起来不完整。

Answer 2

SplashActivity.class中的更改：

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class SplashActivity extends AppCompatActivity {

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

    new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {

                Intent i = new Intent(SplashActivity.this, Home.class);
                startActivity(i);

                finish();
            }
        }, 1000);

}
}

AndroidManifest中的更改：

<activity android:name=".SplashActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
 </activity>
<activity android:name=".Home"/>

更改Home.class：

public class Home extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home);
       ****Your code*****

    }
}

Answer 3

您直接在onCreate开始了您的活动，尝试按下按钮并在其上应用onClick方法来打开您的新活动。像

Intent intent = new Intent(this, Home.class);

button.setOnClickListener(new View.OnClickListener(){
    @override
    public void onClick(View v){
        startActivity(intent);
    }
});

在此代码之前实例化您的按钮。

应用程序不在物理设备上运行

3 个答案: