彈窗BUG

應用使用requestPermissions申請權限時，系統(tǒng)會彈出一個選擇窗口，可進行允許或拒絕，
此窗口中有一個”不再詢問“的選擇框， ”拒絕”及“允許”的按鈕。
遇到一個Bug,單點擊“不再詢問”，“允許”這個按鈕會變灰被禁用。

定位

首先定位代碼在哪里，首先通過“不再詢問”這個文本找出對應英文
packages/apps/PackageInstaller/res/values-zh-rCN/strings.xml:108: “不再詢問”

通過這個“never_ask_again”查找
./packages/apps/PackageInstaller/res/layout/grant_permissions.xml: android:text=“@string/never_ask_again”

        <!-- desc_container用于顯示請求權限程序的圖標perm_desc_root，及請求的權限permission_message --><FrameLayoutandroid:id="@+id/desc_container"android:layout_width="match_parent"android:layout_height="wrap_content"android:paddingTop="18dip"android:paddingStart="20dip"android:paddingEnd="16dip"><includelayout="@layout/permission_description" /></FrameLayout><!-- do_not_ask_checkbox就是 不再詢問的選擇框 --><CheckBoxandroid: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>

定位到源碼在packages/apps/PackageInstaller文件下
GrantPermissionsActivity是進行權限分配的彈出窗口，通過GrantPermissionsDefaultViewHandler來控制GrantPermissionsActivity的ui視圖,按鈕的點擊事件是通過GrantPermissionsViewHandler.ResultListener接口來處理的，GrantPermissionsActivity實現(xiàn)了該接口

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

修改BUG

修改packages下代碼

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 GrantPermissionsViewHandif (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 GrantPermissionsViewHandmActivity.startActivity(intent);break;case R.id.do_not_ask_checkbox:
-                mAllowButton.setEnabled(!mDoNotAskCheckbox.isChecked());
+                //mAllowButton.setEnabled(!mDoNotAskCheckbox.isChecked());break;}}

作者：帥得不敢出門 謝絕轉(zhuǎn)載