android 开机不弹出Launcher选择，直接进入需要默认的Launcher，

参考了一下两篇文章：

http://blog.csdn.net/jia4525036/article/details/18036765

http://blog.sina.com.cn/s/blog_4ad8d46c01019zq4.html

由于项目需求更改，在此做保留以后方便使用

 在 frameworks/base/core/java/com/android/internal/app/ResolverActivity.java 中作修改

根据需要默认Launcher来设置默认

    private void setDefaultLauncher(String defPackageName,String defClassName) {
        if ((defPackageName != null && defPackageName.trim().length() > 1) && (defClassName != null && defClassName.trim().length() > 0)) {
            IntentFilter filter = new IntentFilter();
            filter.addAction("android.intent.action.MAIN");
            filter.addCategory("android.intent.category.HOME");
            filter.addCategory("android.intent.category.DEFAULT");
     
            Intent intent=new Intent(Intent.ACTION_MAIN);
            intent.addCategory(Intent.CATEGORY_HOME);
            List list = new ArrayList();
            list = getPackageManager().queryIntentActivities(intent, 0);
            final int N = list.size();
            ComponentName[] set = new ComponentName[N];
            int bestMatch = 0;
            for (int i=0; i                 ResolveInfo r = list.get(i);
                set[i] = new ComponentName(r.activityInfo.packageName,
                        r.activityInfo.name);
                if (r.match > bestMatch) bestMatch = r.match;
            }
            ComponentName preActivity = new ComponentName(defPackageName, defClassName);
            getPackageManager().addPreferredActivity(filter, bestMatch, set,preActivity);
        }
    }

在onCreate方法中添加调用

    protected void onCreate(Bundle savedInstanceState) {
        //++++++++++++
        boolean firstBoot = (Settings.System.getInt(getApplication().getContentResolver(),
                    Settings.System.DEFAULT_HOME_SETTING_CHANGED, 0) == 0);
        if(firstBoot){
            String defPackageName = "com.panasonic.india.flexuihome";
            String defClassName = "com.panasonic.india.flexuihome.Launcher";
            setDefaultLauncher(defPackageName,defClassName);
     
            android.util.Log.i("deflauncher : ","deflauncher : PackageName = "+
                defPackageName+" ClassName = "+defClassName);
            Intent defIntent = new Intent();
            defIntent.setClassName(defPackageName, defClassName);
            defIntent.setAction("android.intent.action.MAIN");
            defIntent.addCategory("android.intent.category.HOME");
            defIntent.addCategory("android.intent.category.DEFAULT");
            startActivity(defIntent);
            Settings.System.putInt(getApplication().getContentResolver(),
                    Settings.System.DEFAULT_HOME_SETTING_CHANGED,1);
            this.finish();
        }
        //++++++++++++
        // Use a specialized prompt when we're handling the 'Home' app startActivity()
        final int titleResource;
        final Intent intent = makeMyIntent();
        final Set categories = intent.getCategories();
        if (Intent.ACTION_MAIN.equals(intent.getAction())
                && categories != null
                && categories.size() == 1
                && categories.contains(Intent.CATEGORY_HOME)) {
            titleResource = com.android.internal.R.string.whichHomeApplication;
        } else {
            titleResource = com.android.internal.R.string.whichApplication;
        }
     
        onCreate(savedInstanceState, intent, getResources().getText(titleResource),
                null, null, true);
    }

DEFAULT_HOME_SETTING_CHANGED的设置

在core/java/android/provider/Settings.java的public static final class System extends NameValueTable{}中添加

public static final String DEFAULT_HOME_SETTING_CHANGED = "default_home_setting_changed";

packages/SettingsProvider/res/values/defaults.xml中添加

0

packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

在private void loadSystemSettings(SQLiteDatabase db){}中添加中添加

loadIntegerSetting(stmt, Settings.System.DEFAULT_HOME_SETTING_CHANGED, R.integer.default_launcher_value);
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作者：烟雨唯梦
来源：CSDN
原文：https://blog.csdn.net/u011609787/article/details/46519975
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