弹窗BUG

应用使用requestPermissions申请权限时，系统会弹出一个选择窗口，可进行允许或拒绝，
此窗口中有一个”不再询问“的选择框， ”拒绝”及“允许”的按钮。
遇到一个Bug,单点击“不再询问”，“允许”这个按钮会变灰被禁用。

定位

首先定位代码在哪里，首先通过“不再询问”这个文本找出对应英文
packages/apps/PackageInstaller/res/values-zh-rCN/strings.xml:108: “不再询问”

通过这个“never_ask_again”查找
./packages/apps/PackageInstaller/res/layout/grant_permissions.xml: android:text=“@string/never_ask_again”

        <!-- desc_container用于显示请求权限程序的图标perm_desc_root，及请求的权限permission_message -->
        <FrameLayout
            android:id="@+id/desc_container"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingTop="18dip"
            android:paddingStart="20dip"
            android:paddingEnd="16dip">
            <include
                layout="@layout/permission_description" />
        </FrameLayout>
           <!-- do_not_ask_checkbox就是 不再询问的选择框 -->
            <CheckBox
                android:id="@+id/do_not_ask_checkbox"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:layout_marginBottom="-12dp"
                android:minHeight="48dp"
                android:text="@string/never_ask_again"
                android:textColor="?android:attr/textColorPrimary"
                style="?android:attr/textAppearanceSmall"
                android:visibility="gone">
            </CheckBox>

定位到源码在packages/apps/PackageInstaller文件下
GrantPermissionsActivity是进行权限分配的弹出窗口，通过GrantPermissionsDefaultViewHandler来控制GrantPermissionsActivity的ui视图,按钮的点击事件是通过GrantPermissionsViewHandler.ResultListener接口来处理的，GrantPermissionsActivity实现了该接口

public class GrantPermissionsActivity extends OverlayTouchActivity
        implements GrantPermissionsViewHandler.ResultListener {
            mViewHandler = new com.android.packageinstaller.permission.ui.handheld
                    .GrantPermissionsViewHandlerImpl(this, getCallingPackage())
                    .setResultListener(this);
}

修改BUG

修改packages下代码

diff --git a/apps/PackageInstaller/src/com/android/packageinstaller/permission/ui/handheld/GrantPermissionsViewHandlerImpl.java b/apps/PackageInstaller/src/com/android/packageinstaller/permission/ui/handheld/GrantPermissionsViewHandlerImpl.java
index a372e2c5..41c65b89 100644
--- a/apps/PackageInstaller/src/com/android/packageinstaller/permission/ui/handheld/GrantPermissionsViewHandlerImpl.java
+++ b/apps/PackageInstaller/src/com/android/packageinstaller/permission/ui/handheld/GrantPermissionsViewHandlerImpl.java
@@ -342,7 +342,8 @@ public class GrantPermissionsViewHandlerImpl implements GrantPermissionsViewHand
                 if (mResultListener != null) {
                     view.performAccessibilityAction(
                             AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null);
-                    mResultListener.onPermissionGrantResult(mGroupName, true, false);
+                    mResultListener.onPermissionGrantResult(mGroupName, true,
+                            mShowDonNotAsk && mDoNotAskCheckbox.isChecked());
                 }
                 break;
             case R.id.permission_deny_button:
@@ -361,7 +362,7 @@ public class GrantPermissionsViewHandlerImpl implements GrantPermissionsViewHand
                 mActivity.startActivity(intent);
                 break;
             case R.id.do_not_ask_checkbox:
-                mAllowButton.setEnabled(!mDoNotAskCheckbox.isChecked());
+                //mAllowButton.setEnabled(!mDoNotAskCheckbox.isChecked());
                 break;
         }
     }

作者：帅得不敢出门 谢绝转载