Android 常用的 Intent 封装

爱被打了一巴掌 2021-09-21 23:24 194阅读 0赞

本文链接: [https://blog.csdn.net/xietansheng/article/details/115762956][https_blog.csdn.net_xietansheng_article_details_115762956]

### 1. 打开 Uri ###

import android.content.Context
    import android.content.Intent
    import android.net.Uri
    
    fun openUri(context: Context, uri: Uri) { 
        val intent = Intent()
        intent.action = Intent.ACTION_VIEW
        intent.data = uri
        context.startActivity(intent)   // 如果不支持的 Uri 将抛出异常
    }

### 2. 打开 APP 在 设置 中的 应用信息 ###

import android.content.Context
    import android.content.Intent
    import android.net.Uri
    import android.provider.Settings
    
    fun openAppDetails(context: Context, packageName: String) { 
        val intent = Intent()
        intent.action = Settings.ACTION_APPLICATION_DETAILS_SETTINGS
        intent.data = Uri.parse("package:$packageName")
        intent.addCategory(Intent.CATEGORY_DEFAULT)
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
        intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY)
        intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS)
        context.startActivity(intent)
    }

### 3. 在 应用市场 中打开指定 APP ###

import android.content.Context
    import android.content.Intent
    import android.net.Uri
    
    fun openAppMarket(context: Context, packageName: String) { 
        val uri = "market://details?id=$packageName"
        val intent = Intent()
        intent.action = Intent.ACTION_VIEW
        intent.data = Uri.parse(uri)
        context.startActivity(intent)
    }

### 4. 打开 APK 安装包 ###

import android.content.Context
    import android.content.Intent
    import android.net.Uri
    import android.os.Build
    import androidx.core.content.FileProvider
    import java.io.File
    
    fun openInstallApk(context: Context, localApk: File) { 
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { 
            val intent = Intent()
            intent.action = Intent.ACTION_INSTALL_PACKAGE
            // AndroidManifest.xml 中配置的 <provider/> 节点的 android:authorities 属性值
            val authority = "${ context.packageName}.fileprovider"
            val apkUri = FileProvider.getUriForFile(context, authority, localApk)
            intent.setDataAndType(apkUri, "application/vnd.android.package-archive")
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK )
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
            context.startActivity(intent)
        } else { 
            val intent = Intent()
            intent.action = Intent.ACTION_INSTALL_PACKAGE
            val apkUri = Uri.fromFile(localApk)
            intent.setDataAndType(apkUri, "application/vnd.android.package-archive")
            intent.addCategory(Intent.CATEGORY_DEFAULT)
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
            context.startActivity(intent)
        }
    }

### 5. 发送通用的 文本 和 图片 分享 ###

import android.content.Context
    import android.content.Intent
    import androidx.core.content.FileProvider
    import java.io.File
    
    fun sendTextShare(context: Context, text: String) { 
        val intent = Intent()
        intent.action = Intent.ACTION_SEND
        intent.putExtra(Intent.EXTRA_TEXT, text)
        intent.type = "text/plain"
        context.startActivity(Intent.createChooser(intent,"发送至"))
    }
    
    fun sendImageShare(context: Context, localImage: File) { 
        val intent = Intent()
        intent.action = Intent.ACTION_SEND
        intent.type = "image/*"
        // AndroidManifest.xml 中配置的 <provider/> 节点的 android:authorities 属性值
        val authority = "${ context.packageName}.fileprovider"
        val contentUri = FileProvider.getUriForFile(context, authority, localImage)
        intent.putExtra(Intent.EXTRA_STREAM, contentUri)
        context.startActivity(Intent.createChooser(intent, "发送至"))
    }

### 6. 打开系统的 图片 或 文件 选择器 ###

import android.app.Activity
    import android.content.Intent
    
    fun openSystemImageChooser(context: Activity, requestCode: Int){ 
        val intent = Intent(Intent.ACTION_PICK)
        intent.type = "image/*"
        context.startActivityForResult(intent, requestCode)
    }
    
    fun openSystemFilesChooser(context: Activity, requestCode: Int) { 
        val intent = Intent(Intent.ACTION_GET_CONTENT)
        intent.type = "*/*"
        intent.addCategory(Intent.CATEGORY_OPENABLE)
        intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)   // 支持多选
        context.startActivityForResult(Intent.createChooser(intent, "选择文件"), requestCode)
    }
    
    -------------------------------------------------------------------------------------
    
    import android.content.Intent
    import androidx.appcompat.app.AppCompatActivity
    
    class DemoActivity : AppCompatActivity() { 
        /** 在 Activity 中重写 onActivityResult 获取选取的图片或文件 */
        override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) { 
            super.onActivityResult(requestCode, resultCode, data)
            if (requestCode == { 打开选择器的ReqCode} && resultCode == RESULT_OK) { 
                val uri = data?.data            // (单选)选取的图片或文件
                val clipData = data?.clipData   // (多选)选取的图片或文件
                ...
            }
        }
    }

### 7. 打开系统相机拍照 ###

import android.app.Activity
    import android.content.Intent
    import android.net.Uri
    import android.os.Build
    import android.provider.MediaStore
    import androidx.core.content.FileProvider
    import java.io.File
    
    fun openSystemCamera(activity: Activity, requestCode: Int, outputFile: File) { 
        val intent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
        val outputUri = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { 
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
            // AndroidManifest.xml 中配置的 <provider/> 节点的 android:authorities 属性值
            val authority = "${ activity.packageName}.fileprovider"
            FileProvider.getUriForFile(activity, authority, outputFile)
        } else { 
            Uri.fromFile(outputFile)
        }
        intent.putExtra(MediaStore.EXTRA_OUTPUT, outputUri)
        activity.startActivityForResult(intent, requestCode)
    }

[https_blog.csdn.net_xietansheng_article_details_115762956]: https://blog.csdn.net/xietansheng/article/details/115762956