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我正在向接收機發送一張圖像，並希望在電視上顯示圖像。但我的電視屏幕只顯示黑色窗口。我錯過了什麼？誰來幫幫我。我的單張圖像沒有顯示在電視上
HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> received: {"requestId":0,"status":{"applications":[{"appId":"3D307B85","displayName":"Photogenie","isIdleScreen":false,"namespaces":[{"name":"urn:x-cast:com.google.cast.photogenie.custom"},{"name":"urn:x-cast:com.google.cast.inject"}],"sessionId":"7E9F5C8F-317B-4895-8283-1CD2389012EC","statusText":"Application is starting","transportId":"web-1"}],"volume":{"controlType":"attenuation","level":1.0,"muted":false,"stepInterval":0.05000000074505806}},"type":"RECEIVER_STATUS"}
2016-07-05 15:12:10.205 HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> Received device status with requestID=0
2016-07-05 15:12:10.206 HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> checking if app is stopped
2016-07-05 15:12:10.207 HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> checking receiver status for changes; status was requested? 0
2016-07-05 15:12:10.207 HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> <0x12ee222e0> castSocket:<0x174173ec0> didReceiveMessage:<0800120a 72656365 69766572 2d301a01 2a222375 726e3a78 2d636173 743a636f 6d2e676f 6f676c65 2e636173 742e7265 63656976 65722800 32d8037b 22726571 75657374 4964223a 302c2273 74617475 73223a7b 22617070 6c696361 74696f6e 73223a5b 7b226170 70496422 3a223344 33303742 3835222c 22646973 706c6179 4e616d65 223a2250 686f746f 67656e69 65222c22 69734964 6c655363 7265656e 223a6661 6c73652c 226e616d 65737061 63657322 3a5b7b22 6e616d65 223a2275 726e3a78 2d636173 743a636f 6d2e676f 6f676c65 2e636173 742e7068 6f746f67 656e6965 2e637573 746f6d22 7d2c7b22 6e616d65 223a2275 726e3a78 2d636173 743a636f 6d2e676f 6f676c65 2e636173 742e696e 6a656374 227d5d2c 22736573 73696f6e 4964223a 22374539 46354338 462d3331 37422d34 3839352d 38323833 2d314344 32333839 30313245 43222c22 73746174 75735465 7874223a 22417070 6c696361 74696f6e 20737461 74757320 69732072 65616479 2e2e2e22 2c227472 616e7370 6f727449 64223a22 7765622d 31227d5d 2c22766f 6c756d65 223a7b22 636f6e74 726f6c54 79706522 3a226174 74656e75 6174696f 6e222c22 6c657665 6c223a31 2e302c22 6d757465 64223a66 616c7365 2c227374 6570496e 74657276 616c223a 302e3035 30303030 30303037 34353035 3830367d 7d2c2274 79706522 3a225245 43454956 45525f53 54415455 53227d>
2016-07-05 15:12:10.210 HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> received: {"requestId":0,"status":{"applications":[{"appId":"3D307B85","displayName":"Photogenie","isIdleScreen":false,"namespaces":[{"name":"urn:x-cast:com.google.cast.photogenie.custom"},{"name":"urn:x-cast:com.google.cast.inject"}],"sessionId":"7E9F5C8F-317B-4895-8283-1CD2389012EC","statusText":"Application status is ready...","transportId":"web-1"}],"volume":{"controlType":"attenuation","level":1.0,"muted":false,"stepInterval":0.05000000074505806}},"type":"RECEIVER_STATUS"}
2016-07-05 15:12:10.211 HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> Received device status with requestID=0
2016-07-05 15:12:10.211 HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> checking if app is stopped
2016-07-05 15:12:10.212 HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> checking receiver status for changes; status was requested? 0
2016-07-05 15:12:10.213 HelloVideoGoogleCastObjectiveC[1791:389018] The Message is --> status text has changed; calling delegate
有人幫助我。我錯過了什麼？我不知道應該輸出什麼。爲什麼我的單張圖像無法在電視上顯示？我創建了一個自定義的receiver.html，並在開發者控制檯上填充。