CocoaでAVFoundationを使うサンプル
| リビジョン | 210faa38fd225c6a094d1873b71d635b1645af36 (tree) |
|---|---|
| 日時 | 2012-06-11 22:02:15 |
| 作者 | Hori <masaki@MBP....> |
| コミッター | Hori |
nilに対する処理
testAVFoundation/HMDocument.m (diff)| @@ -157,6 +157,8 @@ | ||
| 157 | 157 | [_item autorelease]; |
| 158 | 158 | _item = [item retain]; |
| 159 | 159 | |
| 160 | + if(!_item) return; | |
| 161 | + | |
| 160 | 162 | [_item addObserver:self |
| 161 | 163 | forKeyPath:@"status" |
| 162 | 164 | options:0 |
| @@ -179,6 +181,8 @@ | ||
| 179 | 181 | [_player autorelease]; |
| 180 | 182 | _player = [player retain]; |
| 181 | 183 | |
| 184 | + if(!_player) return; | |
| 185 | + | |
| 182 | 186 | [_player addObserver:self |
| 183 | 187 | forKeyPath:@"rate" |
| 184 | 188 | options:0 |
| @@ -286,7 +290,6 @@ | ||
| 286 | 290 | - (IBAction)volumeDown:(id)sender |
| 287 | 291 | { |
| 288 | 292 | if(_player.volume < 0.1) return; |
| 289 | - | |
| 290 | 293 | _player.volume -= 0.1; |
| 291 | 294 | } |
| 292 | 295 |
masakih
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