#7提交实验7代码

hzuapps · May 12, 2019 · 7adf91e · 7adf91e
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diff --git a/students/soft1714080902324/shiyan7/AndroidManifest.xml b/students/soft1714080902324/shiyan7/AndroidManifest.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="edu.hzu.myapplication">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <provider
+            android:name="android.support.v4.content.FileProvider"
+            android:authorities="com.example.cameraalbumtest.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths"/>
+        </provider>
+    </application>
+<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-feature android:name="android.hardware.camera"
+                    android:required="false" />
+
+
+</manifest>
diff --git a/students/soft1714080902324/shiyan7/MainActivity.java b/students/soft1714080902324/shiyan7/MainActivity.java
@@ -0,0 +1,101 @@
+package edu.hzu.myapplication;
+
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.net.Uri;
+import android.os.Build;
+import android.provider.MediaStore;
+import android.support.annotation.NonNull;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.FileProvider;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ImageView;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+public class MainActivity extends AppCompatActivity {
+
+    public static final int T_P=1;
+    private ImageView picture;
+    private Uri imageUri;
+    private static String[] PERMISSIONS_STORAGE = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        permission();
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        Button takephoto=(Button) findViewById(R.id.take_p);
+        picture=(ImageView)findViewById(R.id.picture);
+
+        takephoto.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                File outputImage=new File(getExternalCacheDir(),"output_image.jpg");
+                try{
+                    if(outputImage.exists()){
+                        outputImage.delete();
+                    }
+                    outputImage.createNewFile();
+                }catch (IOException e){
+                    e.printStackTrace();
+                }
+                if(Build.VERSION.SDK_INT>=24){
+                    imageUri= FileProvider.getUriForFile(MainActivity.this,"com.example.cameraalbumtest.fileprovider",outputImage);
+                }
+                else{
+                    imageUri=Uri.fromFile(outputImage);
+                }
+                //启动照相机
+                Intent intent=new Intent("android.media.action.IMAGE_CAPTURE");
+                intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);
+                startActivityForResult(intent,T_P);
+            }
+
+        });
+    }
+    private void permission(){
+        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) {
+            if (ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
+                ActivityCompat.requestPermissions(this, PERMISSIONS_STORAGE, 1);
+            }
+        }
+    }
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+        if (requestCode == 1) {
+            for (int i = 0; i < permissions.length; i++) {
+                Log.d("权限动态申请", "申请的权限为：" + permissions[i] + ",申请结果：" + grantResults[i]);
+            }
+        }
+    }
+    @Override
+    protected void onActivityResult(int requestCode,int resultCode,Intent data){
+        switch (requestCode){
+            case T_P:
+                if(resultCode==RESULT_OK){
+                    try{
+                        Bitmap bitmap= BitmapFactory.decodeStream(getContentResolver().openInputStream(imageUri));
+                        picture.setImageBitmap(bitmap);
+                    }catch (FileNotFoundException e){
+                        e.printStackTrace();
+                    }
+                }
+                break;
+                default:break;
+        }
+    }
+
+}
diff --git a/students/soft1714080902324/shiyan7/activity_main.xml b/students/soft1714080902324/shiyan7/activity_main.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".MainActivity">
+
+    <Button
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="拍照"
+        android:id="@+id/take_p"/>
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/picture"
+        android:layout_gravity="center_horizontal"/>
+
+</LinearLayout>