android4.4默认输入法设置

找到frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

private void loadSecureSettings(SQLiteDatabase db) {//在此方法最后面添加如下
    loadStringSetting(stmt, Settings.Secure.DEFAULT_INPUT_METHOD, R.string.def_input_method);

}

找到frameworks/base/packages/SettingsProvider/res/values/defaults.xml
<!--添加你想要添加的输入法-->
    <string name="def_input_method" translatable="false">com.android.inputmethod.pinyin/.PinyinIME</string>
找到frameworks/base/core/java/com/android/internal/inputmethod/InputMethodUtils.java

public void enableAllIMEsIfThereIsNoEnabledIME() {
   // if (TextUtils.isEmpty(getEnabledInputMethodsStr())) {//删除
      if (!TextUtils.isEmpty(getEnabledInputMethodsStr())) {//添加
        StringBuilder sb = new StringBuilder();
        final int N = mMethodList.size();
        for (int i = 0; i < N; i++) {
            InputMethodInfo imi = mMethodList.get(i);
            Slog.i(TAG, "Adding: " + imi.getId());
            if (i > 0) sb.append(':');
            sb.append(imi.getId());
        }
        putEnabledInputMethodsStr(sb.toString());
    }
}