【移动应用开发技术】Android中怎么实现一个分享控件

【移动应用开发技术】Android中怎么实现一个分享控件

Android中怎么实现一个分享控件，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。首先，声明BottomSheetDialog对话框的主布局dialog_bottom_sheet.xml

当中，RecyclerView用于展示提供分享功能的应用列表<?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:paddingBottom="14dp"

android:orientation="vertical">

<TextView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:padding="14dp"

android:text="进一步的说明

->

leavesC"

android:textAppearance="@style/TextAppearance.AppCompat"

android:textSize="16sp"/>

<View

android:layout_width="match_parent"

android:layout_height="0.6dp"

android:background="#ddd"/>

<TextView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:padding="12dp"

android:paddingStart="14dp"

android:text="分享文本信息到..."

android:textAppearance="@style/TextAppearance.AppCompat"

android:textSize="14sp"/>

<android.support.v7.widget.RecyclerView

android:id="@+id/rv_appList"

android:layout_width="match_parent"

android:layout_height="match_parent"/>

</LinearLayout>RecyclerView单个子项使用的布局item_app.xml<?xml

version="1.0"

encoding="utf-8"?>

<android.support.constraint.ConstraintLayout

xmlns:android="/apk/res/android"

xmlns:app="/apk/res-auto"

xmlns:tools="/tools"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:paddingBottom="8dp"

android:paddingLeft="16dp"

android:paddingRight="16dp"

android:paddingTop="8dp">

<ImageView

android:id="@+id/iv_appIcon"

android:layout_width="50dp"

android:layout_height="50dp"

android:scaleType="centerCrop"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent"

tools:src="@mipmap/ic_launcher"/>

<TextView

android:id="@+id/tv_appName"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="3dp"

android:ellipsize="end"

android:maxLength="6"

android:textSize="12sp"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toBottomOf="@id/iv_appIcon"

tools:text="之乎者也"/>

</android.support.constraint.ConstraintLayout>RecyclerView配套使用的Adapter：AppShareAdapter/**

*

作者：叶应是叶

*

时间：2018/3/28

20:30

*

描述：/leavesC

*/

public

class

AppShareAdapter

extends

RecyclerView.Adapter<AppShareAdapter.ViewHolder>

{

public

interface

OnClickListener

{

void

onClick(int

position);

}

public

interface

OnLongClickListener

{

void

onLongClick(int

position);

}

private

List<App>

appList;

private

LayoutInflater

layoutInflater;

private

OnClickListener

clickListener;

private

OnLongClickListener

longClickListener;

AppShareAdapter(Context

context,

List<App>

appList)

{

this.layoutInflater

=

LayoutInflater.from(context);

this.appList

=

appList;

}

@Override

public

ViewHolder

onCreateViewHolder(ViewGroup

parent,

int

viewType)

{

View

view

=

layoutInflater.inflate(R.layout.item_app,

parent,

false);

return

new

AppShareAdapter.ViewHolder(view);

}

@Override

public

void

onBindViewHolder(final

ViewHolder

holder,

int

position)

{

holder.iv_appIcon.setBackground(appList.get(position).getAppIcon());

holder.tv_appName.setText(appList.get(position).getAppName());

holder.itemView.setOnClickListener(new

View.OnClickListener()

{

@Override

public

void

onClick(View

v)

{

if

(clickListener

!=

null)

{

clickListener.onClick(holder.getAdapterPosition());

}

}

});

holder.itemView.setOnLongClickListener(new

View.OnLongClickListener()

{

@Override

public

boolean

onLongClick(View

v)

{

if

(longClickListener

!=

null)

{

longClickListener.onLongClick(holder.getAdapterPosition());

}

return

true;

}

});

}

@Override

public

int

getItemCount()

{

return

appList.size();

}

void

setClickListener(OnClickListener

clickListener)

{

this.clickListener

=

clickListener;

}

void

setLongClickListener(OnLongClickListener

longClickListener)

{

this.longClickListener

=

longClickListener;

}

class

ViewHolder

extends

RecyclerView.ViewHolder

{

private

ImageView

iv_appIcon;

private

TextView

tv_appName;

ViewHolder(View

itemView)

{

super(itemView);

iv_appIcon

=

itemView.findViewById(R.id.iv_appIcon);

tv_appName

=

itemView.findViewById(R.id.tv_appName);

}

}

}利用Intent找出所有提供分享功能的应用，初始化BottomSheetDialog即可/**

*

作者：叶应是叶

*

时间：2018/3/28

20:30

*

描述：/leavesC

*/

public

class

MainActivity

extends

AppCompatActivity

{

private

List<App>

appList;

private

BottomSheetDialog

bottomSheetDialog;

private

Intent

shareIntent;

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

shareIntent

=

new

Intent(Intent.ACTION_SEND);

shareIntent.setType("text/plain");

shareIntent.putExtra(Intent.EXTRA_TEXT,

"/leavesC");

}

public

void

originalShare(View

view)

{

Intent

intent

=

Intent.createChooser(shareIntent,

"分享一段文本信息");

if

(shareIntent.resolveActivity(getPackageManager())

!=

null)

{

startActivity(intent);

}

}

public

void

customizedShare(View

view)

{

if

(bottomSheetDialog

==

null)

{

bottomSheetDialog

=

new

BottomSheetDialog(this);

bottomSheetDialog.setContentView(R.layout.dialog_bottom_sheet);

initBottomDialog();

}

bottomSheetDialog.show();

}

private

void

initBottomDialog()

{

appList

=

getShareAppList(this,

shareIntent);

AppShareAdapter

appShareAdapter

=

new

AppShareAdapter(this,

appList);

appShareAdapter.setClickListener(new

AppShareAdapter.OnClickListener()

{

@Override

public

void

onClick(int

position)

{

Intent

intent

=

new

Intent(Intent.ACTION_SEND);

intent.setComponent(new

ComponentName(appList.get(position).getPackageName(),

appList.get(position).getMainClassName()));

intent.setType("text/plain");

intent.putExtra(Intent.EXTRA_TEXT,

"/leavesC");

startActivity(intent);

}

});

appShareAdapter.setLongClickListener(new

AppShareAdapter.OnLongClickListener()

{

@Override

public

void

onLongClick(int

position)

{

Intent

intent

=

new

Intent();

intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);

intent.setData(Uri.parse("package:"

+

appList.get(position).getPackageName()));

startActivity(intent);

}

});

RecyclerView

rv_appList

=

bottomSheetDialog.findViewById(R.id.rv_appList);

if

(rv_appList

!=

null)

{

rv_appList.setLayoutManager(new

GridLayoutManager(this,

4));

rv_appList.setA