android APP隱私政策彈框的實現代碼實例
步驟一：在assets目錄下放置隱私政策的文本文件，比如privacy.txt
步驟二：在drawable目錄下放置圓角彈出框演示：
<code><
shape
xmlns:android
="http://schemas.android.com/apk/res/android"
android:shape
="rectangle"
><
solid
android:color
="#ffffff"
/><
corners
android:radius
="10dp"
/>shape
>/<code>
步驟三：在layout下放置彈出框的佈局文件：
<code><
LinearLayout
xmlns:android
="http://schemas.android.com/apk/res/android"
xmlns:tools
="http://schemas.android.com/tools"
android:layout_width
="match_parent"
android:layout_height
="match_parent"
android:background
="@drawable/dialog_privacy_shape"
android:orientation
="vertical"
><
RelativeLayout
android:layout_width
="match_parent"
android:layout_height
="match_parent"
><
LinearLayout
android:layout_width
="match_parent"
android:layout_height
="match_parent"
android:layout_above
="@+id/ll_btn_bottom"
android:layout_marginBottom
="15dp"
android:gravity
="center"
android:orientation
="vertical"
><
TextView
android:id
="@+id/tv_title"
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
android:layout_marginTop
="10dp"
android:layout_marginBottom
="10dp"
android:text
="個人信息保護指引"
android:textColor
="#000000"
android:textSize
="18sp"
/><
ScrollView
android:layout_width
="match_parent"
android:layout_height
="match_parent"
android:layout_marginLeft
="5dp"
android:layout_marginRight
="5dp"
android:fadingEdgeLength
="50dp"
android:requiresFadingEdge
="horizontal"
><
TextView
android:id
="@+id/tv_content"
android:layout_width
="match_parent"
android:layout_height
="match_parent"
android:layout_marginTop
="10dp"
android:singleLine
="false"
android:text
=""
android:textColor
="#000000"
/>ScrollView
>LinearLayout
><
LinearLayout
android:id
="@+id/ll_btn_bottom"
android:layout_width
="match_parent"
android:layout_height
="wrap_content"
android:layout_alignParentBottom
="true"
android:gravity
="center"
><
Button
android:id
="@+id/btn_agree"
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
android:layout_marginBottom
="5dp"
android:text
="同意"
android:onClick
="onClickAgree"
android:textColor
="#000000"
/><
Button
android:id
="@+id/btn_disagree"
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
android:layout_marginBottom
="5dp"
android:text
="放棄使用"
android:onClick
="onClickDisagree"
android:textColor
="#000000"
/>LinearLayout
>RelativeLayout
>LinearLayout
> /<code>
步驟五：放置一個主頁面，測試用：
<code><
LinearLayout
android:layout_width
="match_parent"
android:layout_height
="30dp"
android:orientation
="horizontal"
android:gravity
="center"
xmlns:android
="http://schemas.android.com/apk/res/android"
><
CheckBox
android:id
="@+id/checkBox"
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
/><
TextView
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
android:text
="已閱讀並同意"
android:textSize
="14sp"
/><
TextView
android:id
="@+id/tv_xieyi"
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
android:onClick
="onClickPrivacy"
android:text
="隱私政策"
android:textColor
="#0000ff"
android:textSize
="14sp"
/>LinearLayout
>/<code>
步驟六：代碼實現如下：
<code>import
androidx.appcompat.app.AppCompatActivity;import
android.app.AlertDialog;import
android.app.Dialog;import
android.os.Bundle;import
android.util.DisplayMetrics;import
android.view.LayoutInflater;import
android.view.View;import
android.view.WindowManager;import
android.widget.TextView;import
java.io.BufferedReader;import
java.io.IOException;import
java.io.InputStream;import
java.io.InputStreamReader;import
java.io.UnsupportedEncodingException;public
class
MainActivity
extends
AppCompatActivity
{ Dialog dialog;protected
void
onCreate
(Bundle savedInstanceState)
{super
.onCreate(savedInstanceState); setContentView(R.layout.activity_main); }public
void
onClickAgree
(View v)
{ dialog.dismiss(); }public
void
onClickDisagree
(View v)
{ finish(); }public
void
onClickPrivacy
(View v)
{ showPrivacy("privacy.txt"
); }public
void
showPrivacy
(String privacyFileName)
{ String str = initAssets(privacyFileName);final
View inflate = LayoutInflater.from(MainActivity.this
).inflate(R.layout.dialog_privacy_show,null
); TextView tv_title = (TextView) inflate.findViewById(R.id.tv_title); tv_title.setText("個人信息保護指引"
); TextView tv_content = (TextView) inflate.findViewById(R.id.tv_content); tv_content.setText(str); dialog =new
AlertDialog .Builder(MainActivity.this
) .setView(inflate) .show(); DisplayMetrics dm =new
DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm);final
WindowManager.LayoutParams params = dialog.getWindow().getAttributes(); params.width = dm.widthPixels*4
/5
; params.height = dm.heightPixels*1
/2
; dialog.getWindow().setAttributes(params); dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent); }public
StringinitAssets
(String fileName)
{ String str =null
;try
{ InputStream inputStream = getAssets().open(fileName); str = getString(inputStream); }catch
(IOException e1) { e1.printStackTrace(); }return
str; }public
static
StringgetString
(InputStream inputStream)
{ InputStreamReader inputStreamReader =null
;try
{ inputStreamReader =new
InputStreamReader(inputStream,"UTF-8"
); }catch
(UnsupportedEncodingException e1) { e1.printStackTrace(); } BufferedReader reader =new
BufferedReader(inputStreamReader); StringBuffer sb =new
StringBuffer(""
); String line;try
{while
((line = reader.readLine()) !=null
) { sb.append(line); sb.append("\n"
); } }catch
(IOException e) { e.printStackTrace(); }return
sb.toString(); } } /<code>
步驟7：實現效果如下：
