Intent 常用调用系统action

最新推荐文章于 2022-10-09 10:24:44 发布

原创最新推荐文章于 2022-10-09 10:24:44 发布 · 609 阅读

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#intent #相册 #打电话 #录音 #视频

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本文介绍了 Android 中 Intent 的多种使用方式，包括打开网址、拨打电话、启动相机和相册等常见应用场景，并提供了 onActivityResult 方法来处理系统回调返回。

Intent : 打开网址

                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_VIEW);
                Uri uri = Uri.parse("http://www.baidu.com");
                intent.setData(uri);
                tartActivity(intent);

Intent : 拨号

                Intent myIntent = new Intent();
                Uri uri = Uri.parse("tel:123456");
                myIntent.setAction(Intent.ACTION_DIAL);
                myIntent.setData(uri);
                startActivity(myIntent);

Intent：打电话

                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_CALL);
                Uri uri = Uri.parse("tel:123445");
                intent.setData(uri);
                startActivity(intent);

Intent : 启动相册

                Intent intent = new Intent();
                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(intent,100);

Intent: 打开相机

               Intent intent = new Intent();
               intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
               startActivityForResult(intent,200);

Intent：打开相册图片

                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_PICK);           intent.setDataAndType(MediaStore.Images.Media.INTERNAL_CONTENT_URI,"image/*");
                startActivityForResult(intent,300);

Intent : 打开录音

                Intent intent = new Intent();
                intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
                startActivity(intent);

上面的系统回调返回

  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if(requestCode == 100 && resultCode == Activity.RESULT_OK) {
            Bundle bundle = data.getExtras();
            Bitmap bitmap = (Bitmap) bundle.get("data");
            ImageView tupian = (ImageView) findViewById(R.id.tupian);
            tupian.setImageBitmap(Bitmap.createBitmap(bitmap));
        }

        if (requestCode == 200 && resultCode == Activity.RESULT_OK) {
            String s = data.getData().toString();
            Toast.makeText(MainActivity.this, "视频保存在" + s, Toast.LENGTH_SHORT).show();
        }

        if (requestCode == 300 && resultCode == Activity.RESULT_OK) {
            ImageView iv = (ImageView) findViewById(R.id.opentupain);
            Uri selectedImage = data.getData();
            String[] filePathColumn = { MediaStore.Images.Media.DATA };
            Cursor cursor = getContentResolver().query(selectedImage,
                    filePathColumn, null, null, null);
            cursor.moveToFirst();
            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
            String picturePath = cursor.getString(columnIndex);
            cursor.close();
            iv.setImageBitmap(BitmapFactory.decodeFile(picturePath));
        }
    }