6.0，7.0，8.0获取相机权限

最新推荐文章于 2022-03-24 19:14:45 发布

原创最新推荐文章于 2022-03-24 19:14:45 发布 · 1.5k 阅读

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CC 4.0 BY-SA版权

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#android

该博客主要围绕Android开发展开，提供了将Bitmap转换成字符串和将字符串转换成Bitmap类型的代码实现，还给出了使用Glide加载原型图的代码示例，涉及动态授权等相关内容。

// 权限
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        permission();
        StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
        StrictMode.setVmPolicy(builder.build());
        builder.detectFileUriExposure();
    }

//动态授权

private void permission() {

    if (Build.VERSION.SDK_INT >= 23) {
        String[] mPermissionList = new String[]{
Manifest.permission.WRITE_EXTERNAL_STORAGE,
 Manifest.permission.ACCESS_FINE_LOCATION,
 Manifest.permission.CALL_PHONE,
 Manifest.permission.READ_LOGS,
 Manifest.permission.READ_PHONE_STATE,
 Manifest.permission.READ_EXTERNAL_STORAGE,
 Manifest.permission.SET_DEBUG_APP, 
Manifest.permission.SYSTEM_ALERT_WINDOW,
 Manifest.permission.GET_ACCOUNTS,
 Manifest.permission.WRITE_APN_SETTINGS,
Manifest.permission.CAMERA};
        ActivityCompat.requestPermissions(MainActivity.this, mPermissionList, 123);
    }
}

//将Bitmap转换成字符串

public String bitmapToString(Bitmap bitmap){

String string=null;
ByteArrayOutputStream bStream=new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG,75,bStream);
byte[]bytes=bStream.toByteArray();
string=Base64.encodeToString(bytes,Base64.DEFAULT);
return string;
}

// 将字符串转换成Bitmap类型

public Bitmap stringToBitmap(String string) {
Bitmap bitmap = null;
try {
byte[] bitmapArray;
bitmapArray = Base64.decode(string, Base64.DEFAULT);
bitmap = BitmapFactory.decodeByteArray(bitmapArray, 0,
bitmapArray.length);
} catch (Exception e) {
e.printStackTrace();
}
return bitmap;
}

//Glide加载原型图

Glide.with(this).load(bitmap).apply(RequestOptions.bitmapTransform(new CircleCrop())).into(imgMine);

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