Question

显示启动画面后跟随错误。如何解决这个问题？

在SplashScr.java

中的线程中完成指定时间后显示此错误消息

的AndroidManifest.xml

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

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

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

</manifest>

SplashScr.java

package com.example.lalinda.splashscreen;

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

/**
 * Created by Lalinda on 8/7/2016.
 */
public class SplashScr extends AppCompatActivity
{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash_screen);

        Thread myThread = new Thread()
        {
            @Override
            public void run()
            {
                try {
                    sleep(10000);
                    Intent startMainScreen = new Intent(getApplicationContext(), Splash.class);
                    startActivity(startMainScreen);
                    finish();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        };
        myThread.start();
    }
}

Splash.java ：这是第二个活动

package com.example.lalinda.splashscreen;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;

public class Splash extends AppCompatActivity {

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

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_splash, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

修改： logcat

java.lang.RuntimeException：无法启动活动ComponentInfo {com.example.lalinda.splashscreen / com.example.lalinda.splashscreen.Splash}：java.lang.IllegalStateException：此Activity已经有一个操作栏由窗户装饰。请勿在主题中请求Window.FEATURE_SUPPORT_ACTION_BAR并将windowActionBar设置为false以使用工具栏。

Answer 1

在设置工具栏之前，您需要删除ActionBar。将您的应用主题设置为：

<style name="AppTheme" parent="@android:style/Theme.Holo.Light">
    <item name="android:windowActionBar">false</item>
    <item name="android:windowNoTitle">true</item>
</style>

就像@Habel Philip在上面的评论中提到的那样，使用Handler在限定时间内显示Splash屏幕。事实上，我建议首先不要使用Splash屏幕。这是现在推荐的模式（启动屏幕模式）：https://www.bignerdranch.com/blog/splash-screens-the-right-way/

启动画面后第二个活动没有开始

1 个答案: