我在Android Studio上制作的应用程序有问题。我不知道为什么,但是在启动屏幕之后,应用程序崩溃了。我希望在初始屏幕之后打开 Activity “Accueil”。上周工作正常,但现在不行了。我什么都没碰。我向您展示清单和.java
文件。
Splashscreen.java:
import android.app.Activity;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.view.Window;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.LinearLayout;
public class Splashscreen extends Activity {
public void onAttachedToWindow() {
super.onAttachedToWindow();
Window window = getWindow();
window.setFormat(PixelFormat.RGBA_8888);
}
Thread splashTread;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splashscreen);
StartAnimations();
Thread loading = new Thread() {
public void run() {
try {
sleep(5000);
Intent main = new Intent(Splashscreen.this,Menu.class);
startActivity(main);
finish();
} catch (Exception e) {
e.printStackTrace();
} finally {
finish();
}
}
};
loading.start();
}
private void StartAnimations() {
Animation anim = AnimationUtils.loadAnimation(this, R.anim.alpha);
anim.reset();
LinearLayout l = (LinearLayout) findViewById(R.id.lin_lay);
l.clearAnimation();
l.startAnimation(anim);
anim = AnimationUtils.loadAnimation(this, R.anim.rotate);
anim.reset();
ImageView iv = (ImageView) findViewById(R.id.splash);
iv.clearAnimation();
iv.startAnimation(anim);
splashTread = new Thread() {
@Override
public void run() {
try {
int waited = 0;
while (waited < 3500) {
sleep(100);
waited += 100;
}
Intent intent = new Intent(Splashscreen.this,Menu.class);
startActivity(intent);
finish();
} catch (InterruptedException e) {
}
}
};
}
}
Android清单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.thibaudmangeot.erdfapplicationsecurite">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<activity android:name=".Splashscreen"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:name=".Accueil"
android:label="@string/title_activity_accueil"/>
</application>
</manifest>
Accueil.java:
package com.example.thibaudmangeot.erdfapplicationsecurite;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.widget.Button;
import android.view.View;
public class Accueil extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_accueil);
Button buttonfis = (Button) findViewById(R.id.buttonfis);
buttonfis.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
goTosignin();
}
});
}
private void goTosignin() {
Intent intent = new Intent(this, Menu.class);
startActivity(intent);
}
}
最佳答案
做这个
Intent main = new Intent(Splashscreen.this, Accueil.class);
startActivity(main);
finish();
代替
Intent main = new Intent(Splashscreen.this, Menu.class);
startActivity(main);
finish();
您甚至没有在清单中提到菜单 Activity 。